Jul 17, 2019 · Less Fuel Mileage – Your Silverado’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your Silverado’s engine to blow.. "/>
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1991 Chevrolet C3500 Silverado 8 Cyl 7.4L Cab & Chassis, 31 Gallon Fuel Tank, Codes: VER, VPU, VRF, VSF, Except High Temp Fuel SDR(8R6) ... 1991 Chevrolet C3500 Idle Control Valve. ... Perform a thorough diagnosis to ensure the pump is the problem before replacing it. Part 1: Check whether the problem is fuel-related Contact Us. Address 4800.

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Chevy Forums FREE technical assistance for your restoration and repair. Model specific subject matter experts, classified ads and more. ... 06 Silverado ISS / 06 Silverado SS / 06 300C SRT8 Email Report d8nk Forum Newbie Posts: 36 Loc: St Paul, MN ... So some of the problems are during idle/start-up. That would not fit with the 02 sensor since. Oct 13, 2012 · 85,240 Answers. This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 (1996 and newer) or a OBD1 (1995 and older) fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals ....

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Chevy CK Pickup 1991, Idle Air Control Valve by Herko®. ... MOOG® Problem Solver™ Front Coil Springs. 0 # 525654029. $92.42 - $200.63 ... 1991 Chevy CK Pickup Models. 1991 Chevy C1500 454 SS; 1991 Chevy C1500 Cheyenne; 1991 Chevy C1500 Scottsdale; 1991 Chevy C1500 Silverado; 1991 Chevy C1500 WT; 1991 Chevy C2500 Base; 1991 Chevy C2500.
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This could be caused by problems with the battery or other issues that cause the vehicle to run the battery down. Replacing your battery will cost around $200 and occurs on average at about 33,000 miles. You might also need to replace the alternator or body control module. Chevrolet Silverado engine problems aren’t restricted to faulty sensors. For 1999 to 2017 models, especially the V6 and 5.3-liter V8 engines, oil consumption was a real concern. We’re talking about 3 or 4 quarts between oil changes, and sometimes more.. Jun 04, 2022 · Published on. June 4, 2022. The GM 2.7-liter L3B Turbo four-cylinder engine for Chevy Silverado and GMC Sierra pickups is meant to change minds about power and torque in a small package. It seems this tough engine has everything incorporated into it. Stop-start cylinder deactivation, direct injection, variable valve timing, thermal management .... Philly area. A TPS is a low-buck part. You've done enough diagnosis to try a new one. I don't think it will help, but it might. The TPS is one of the main sensor inputs on a TBI (speed/density) type system. When you unplug it, the ECM goes into "limp home" mode with a pre-set series of tables designed to have the best shot at keeping the engine.

1994 Chevrolet C1500 194,000 mi, engine idles too fast, wasting fuel, and making it unsafe at slow speeds, because i have to have my foot on the brake. carb cleaner sprayed at the base of the throttle body, when idling, is sucked through, causing the enging to bog down for a short time. I suspect a gasket failure. The way to test this out is to start your Silverado and let it run at idle. Disconnect the EGR valve's vacuum line and apply direct vacuum using a hand vacuum pump. When you apply vacuum, the EGR valve should open. When the valve opens; if the passages are clean and unobstructed you should notice a large RPM decrease.

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Jan 29, 2017 · The only part of the ignition system I haven't tried replacing or inspecting is the control module. I've had to replace the ignition module that sits at the base of the distributor a few times, but the failure mode was always that it would start and run, but wouldn't apply any advance, run a little rough, and would throw a trouble light..

Chevy Forums FREE technical assistance for your restoration and repair. Model specific subject matter experts, classified ads and more. ... 06 Silverado ISS / 06 Silverado SS / 06 300C SRT8 Email Report d8nk Forum Newbie Posts: 36 Loc: St Paul, MN ... So some of the problems are during idle/start-up. That would not fit with the 02 sensor since.

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January 2001Dear Consumer:Thank you for contacting the Center for Auto Safety (CAS) about your GM Suburban, Tahoe/Yukon, full-size C/K or Silverado/Sierra pickup or Blazer/Jimmy sport utility vehicle. For years, GM had two Jimmys and two Blazers - one full size and one mid-size. In 1993, the big GMC Jimmy became the Yukon while the smaller S15 Jimmy became the only Jimmy. In 1995, the big. Joined Apr 15, 2007. 226 Posts. #4 · Feb 28, 2008. Re: extream high idle problem on 1990 chevy 1500, 4.3 v6 TBI. Good afternoon. Yes the pcv valve circuit you decribe is correct.You might call it flow thru filtered crankcase ventilation.TPS is throttle position sensor-probably 3 or 4 wire sensor at throttle linkage. I am working on a truck for the inlaws. its a 1991 r3500 gmc (1980's body style crew cab dually tbi 454 4l80e) Original motor broke the crank and threw 2 rods. Looks like a bad casting of the crank (looks like the crank had been cracked half way for some time) Ran great, but in its final weeks wa.

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Apr 02, 2010 · hoping to reach asemaster35yrs on same prolem with 91 1500 silverado 4x4. i still have same problem i dicconnected and plugged brake booster hose and still same problem i also removed the idle air control and cleaned the cavity in the throttle body and the idle climed to 1200 rpm but it seems to run better except for the high idle.. Nov 20, 2012 · Chevy Silverado Idle Problems. I am having problems with my 2007 Chevy Silverado 1500 LT 4x4 (New Body Style) V8 5.3. All of a sudden as I am driving on the street my truck accelerates on its own and the speedometer needle stays stuck on zero and the RPM's increases and if I hit the accelerator pedal the truck will even go super fast as if I ....

Problem Description. A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern. 23 people reported this problem. 6 comments.. . Have the throttle body and plate cleaned with a carbon cleaner. Be sure to get it clean. Open the throttle and clean the entire body and the plate. This will usually fix this condition. This is assuming there is no vacuum leak, as that can also cause a low speed/idle stall. 2004 Chevy 1500. Vortec 4.3 V6.. After trying several other fixes I finally diagnosed and repaired the problem part. The throttle body gasket had broken and was letting in too much air caus....

Less Fuel Mileage - Your Silverado's engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren't working properly it can't do that and fuel mileage suffers. Knock/Detonation - Detonation can cause your Silverado's engine to blow.

Feb 06, 2011 · 1 Answer. On my 1991 chevy silverado 1500 I cannot get heat in the passager compartment -- the heat door will not open. The indicator (on the control head) immediately goes to arrors all the way across after the truck is started. The blower only blows our cold air. I've changed the actuator switch/motor under the dash and the head, checked and ....

Put the spring scale 1/2 way between the alternator and crankshaft pulley, pull on it to 22lbs (10Kg), and check the deflection doesn't exceed 0.453 in (11.5mm). If it does, readjust so that deflection is in the range 0.28-0.31 in (7-8 mm) for a used belt or 0.256- 0.295 (6.5- 7.5mm) in for a new belt.

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1991 Chevrolet C3500 Silverado 8 Cyl 7.4L Cab & Chassis, 31 Gallon Fuel Tank, Codes: VER, VPU, VRF, VSF, Except High Temp Fuel SDR(8R6) ... 1991 Chevrolet C3500 Idle Control Valve. ... Perform a thorough diagnosis to ensure the pump is the problem before replacing it. Part 1: Check whether the problem is fuel-related Contact Us. Address 4800. Feb 04, 2022 · 1991 Chevrolet Silverado C1500 Extended Cab w/5.7 liter (350) engine, automatic w/AC, 98K miles. Problem: Pickup starts and runs fine from cold and when moving. As soon as the thermostat opens (temp g read more.

Jun 11, 2021 · Although Chevrolet has been making trucks since 1918, the Silverado has only been around since 1999. We take a look at the best and worst years. For over a century, Chevrolet has been building trucks to get America to work. The 1918 One-Ton owns the title of being the first purpose-built Chevy truck. Times were different, and the One-Ton barely .... I've been having this problem with my truck for a while, and just cant seem to solve it. Every once in a while when I fire it up, I get a high idle, plus the "service engine soon" light, and an extremely hard shift. The shift points are even 1000+rpm higher. Just going from park to drive barks the tires (with my foot on the brake).

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Ensure your Chevy Silverado's fuel tank is between 1/4 and 3/4 full. Engine coolant temperature must be below 122°F and within 11°F of the ambient air temperature. Do not leave the key on prior to the cold start or the heated oxygen sensor (O2) diagnostic may not run. IDLE TIME: Run engine (do not drive) for 2 1/2 minutes with the air.

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Oct 13, 2012 · 85,240 Answers. This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 (1996 and newer) or a OBD1 (1995 and older) fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals .... It starts and idles fine but when I put it in drive it moves forward a little bit - Chevrolet 1991 Silverado 2500 question. Search Fixya. Browse Categories ... silverado 1500 ext. cab. my problem is while driving on the highway my truck ... 1991 isuzu pup idle problem. Chevrolet Silverado 1500. The most common reasons a Chevrolet Silverado 1500 has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. 0%. 34 % of the time it's the..

2000 chevy silverado high idle when i bump the trottle or just driving around When the high idle kicks in it also gives the trani an eractic shifting pattern. ... I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money. Chevy Silverado. Coolant Leaking problem 5. ... high volume oil pumps increase the amount of oil flow by an average of 20% through the engine improving oil pressure at idle providing dependable performance every time in every ... LLY, LBZ, LMM. 50 8. 1991 nissan pick-up 1993 Caprice 2000 GMC S10 Blaser 2007 nbs 3500 GMC 4x4 crew-cab long box.

It would cool and drop back into open-loop at idle, making for a rich rough running idle. I installed a heated three wire O2 sensor adapter kit from Jim's Performance ($19.95). These three wire heated sensors (I use the 10amp Bosch 13077 O2 sensor) are more expensive with the added feature of self-cleaning and longer use..

Chevy Lumina 1991, Camshaft by Melling®. Melling offers a full line of OE replacement camshafts for cars, light duty, medium duty and heavy duty trucks. Melling listings include OEM applications to match the engine requirements desired... Right for your vehicle and lifestyle Made from high-quality materials for ultimate durability.

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1991 chevy silverado k2500 big block no spark; 92 k1500 with serious steering issues; Press-on or heat diff bearings? still having issues with 92 k1500; 1991 idle/running problem; 88 chevy 2500 runs poorly (help) '91 K1500, 700R4 won't shift into 3rd or OD; 92 k1500 hesitation/power loss problem; Truck box replacement lock - make your own?.

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It starts and idles fine but when I put it in drive it moves forward a little bit - Chevrolet 1991 Silverado 2500 question. Search Fixya. Browse Categories ... silverado 1500 ext. cab. my problem is while driving on the highway my truck ... 1991 isuzu pup idle problem.

Philly area. A TPS is a low-buck part. You've done enough diagnosis to try a new one. I don't think it will help, but it might. The TPS is one of the main sensor inputs on a TBI (speed/density) type system. When you unplug it, the ECM goes into "limp home" mode with a pre-set series of tables designed to have the best shot at keeping the engine. Philly area. A TPS is a low-buck part. You've done enough diagnosis to try a new one. I don't think it will help, but it might. The TPS is one of the main sensor inputs on a TBI (speed/density) type system. When you unplug it, the ECM goes into "limp home" mode with a pre-set series of tables designed to have the best shot at keeping the engine. 10,430. Asked by dragonflyoffshore Nov 27, 2012 at 11:42 AM about the 1995 GMC Sierra 1500 K1500 SL 4WD Extended Cab Stepside SB. Question type: Maintenance & Repair. o2 sensor code 44 (lean) Replaced: coolant temp sensor, tps, map sensor, fuel filter, and o2 sensor. It will run normal on occasion but only lasts about 45 seconds or so. In most Silverado’s the biggest culprit for this problem is often a faulty fan motor. The guys at the dealer can easily replace the motor for you. 3. AC only blowing hot air. There have been reports that the AC in some Silverado’s blows only hot air even when set to blow cold air..

1993 Chevrolet C1500. Asked by maniac121 in Panama City, FL on November 05, 2009. Truck runs great when driving down the road and idles smooth for a couple minutes after coming to a stop. Then it develops a "stumble" that is very pronounced. I'm fairly confident it isn't ignition as the distributor, cap, plugs, wires, and coil are new.

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The 2022 Chevy Silverado comes with a 2.7L turbo-charged 4-cylinder engine and is a great alternative to traditional V8s, according to the car experts at AutoBlog. The professionals also recommend upgrading to the Duramax diesel engine for the best in efficiency. “Dependable 1997 Silverado truck for work or play. Many more miles to give. The idle air intake ensures your Silverado maintains a consistent idle, even when it powers vehicle functions. When the air control valve for Chevy Silverado is clogged, it likely to lead to an instant, irregular deceleration as you lift your foot off the pedal, causing a backfire through the tailpipe and loading up the engine with surplus fuel..

1991 silverado 3500: die..the engine is warmed..untill..idle fine Have a funny problem with a 1991 Siverado 350 5 speed trans. The engine when cold starts wonderfully, ides for about 5 seconds and wants to die. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!Chevrolet's best-selling truck will also become its first fully electric truck when the Silverado EV debuts for the 2024 model year. 4 rear main wear ring. i. Class I crate engines generally produce about 10% more horsepower and torque over the.

1991 silverado 3500: die..the engine is warmed..untill..idle fine Have a funny problem with a 1991 Siverado 350 5 speed trans. The engine when cold starts wonderfully, ides for about 5 seconds and wants to die. 1991 CHEVY S10 4.3 ENGINE WANT IDLE OR STAY RUNNING WHAT CAN I TRY ?SEEMED LIKE I WAS OUT OF GAS PUT ... We have the same problem mines 94. we have a spider injecter that went bad..300 part cheap at junk yard. we changed fuel filter,fuel pump,spark plugs / wires we were getting fuel all the way ... 1990 chevy silverado 1500 wont run.

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Oct 09, 2010 · Re: 1990 chevy silverado 5.7L will not idle. Hi cmorphis. Remove the IAC solenoid and test it for dead spots ,the plunger is most likely stuck on one position. When your done with the IAC hook up a fuel pressure tester and test the fuel pump, the readings should be somewhere between 12-15 psi. post back your findings..

In most Silverado's the biggest culprit for this problem is often a faulty fan motor. The guys at the dealer can easily replace the motor for you. 3. AC only blowing hot air There have been reports that the AC in some Silverado's blows only hot air even when set to blow cold air. Also if you have some carbon build up on the valves and throttle body may also add to the hesitations. Have the fuel system pressure checked and if okay and within specification then have injection system serviced and the combustion system and throttle body cleaned out. This should fix the hesitations. Chevrolet 1991 hesitation.

1991 Chevrolet Silverado C1500 Extended Cab w/5.7 liter (350) engine, automatic w/AC, 98K miles. Problem: Pickup starts and runs fine from cold and when moving. As soon as the thermostat opens (temp gauge starts to climb), pickup will stutter and die when pulling up to a stop light, when backing up, etc. without using a little gas pedal to keep the engine speed up. Customer complaint bad gas mileage and a surging condition at idle, sometimes. Problem: excessive corrosion internally on the Engine Coolant Temperature Sens.

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1991 chevy 454 7.4 wont idle, ... SOURCE: 1997 chevy silverado 1500 350 vortech, new fule pump not working. before you drop tank again, ... I have traced problem to... after turning on key fuel pump kicks on when u crank it over injectors shoot gas and truck starts!. Oct 23, 2013 · The IAC (Idle Control Valve) is electronically adjusted by the on board computer. There is no way to manually adjust it. If you are having issues with the idle, the best remedy is to replace it .... Put the spring scale 1/2 way between the alternator and crankshaft pulley, pull on it to 22lbs (10Kg), and check the deflection doesn't exceed 0.453 in (11.5mm). If it does, readjust so that deflection is in the range 0.28-0.31 in (7-8 mm) for a used belt or 0.256- 0.295 (6.5- 7.5mm) in for a new belt. The idle switch is connected to the ECU, and the full throttle switch to the A/T computer. Jul 10, 2021 · About Sensor Chevy Location Speed 1989 Silverado 1991 Chevy Truck 5 speed experts Discussion in 'Transmission & Driveline Topics' started by f-body, Aug 20, 2007.

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All Activity. Classic Chevrolet / GMC Pickup Trucks. 1988-1999 Chevrolet & GMC C/K GMT400 Platform. Hesitation/stumble on acceleration. Sign up for FREE! Become a GM-Trucks.com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and.

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Jul 17, 2019 · Less Fuel Mileage – Your Silverado’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your Silverado’s engine to blow.. The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. 2. Check Engine Light comes on. Gas treatments, to clean the system, have also helped keep everything running smoothly. My only complaint is gas mileage. 14 miles per gallon is about all I can get. Given today's prices, it makes driving a bit expensive. Model year. 1991. Year of manufacture. 1991. First year of ownership. 1991.. 1991 chevy 1500, changed almost everything and still misses going down road sometimes, can't figure it out, please help. 1 Answer. we have changed out almost everything but still runs rough & misses going down highway. does fine in idle and at low speeds , this happens on hwy, loses speed sometimes all the way down to 35 miles an. 8. The RPM on my engine does not come down when I come to an idle. 9. I am not getting as good of fuel economy as I think I should. 10. The engine is revving up and down when I come down to an idle. There is a large "sucking" sound coming from the throttle body when it is warmed up. My engine stalls or almost stalls when I come down to an. I've been having this problem with my truck for a while, and just cant seem to solve it. Every once in a while when I fire it up, I get a high idle, plus the "service engine soon" light, and an extremely hard shift. The shift points are even 1000+rpm higher. Just going from park to drive barks the tires (with my foot on the brake).

Apply gasket dressing to the rear flanges on the water pump, and position the gaskets. Then, apply gasket dressing to the gaskets. Install the water pump. Tighten the six bolts in a crisscross pattern to 132 inch-lbs, and then again to 22 ft-lbs. Re-install the belt tensioner, and tighten the bolts to 37 ft-lbs. This is a video about rough acceleration rough idle low idle and possible stalling.

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Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!Chevrolet's best-selling truck will also become its first fully electric truck when the Silverado EV debuts for the 2024 model year. 4 rear main wear ring. i. Class I crate engines generally produce about 10% more horsepower and torque over the. I've been having this problem with my truck for a while, and just cant seem to solve it. Every once in a while when I fire it up, I get a high idle, plus the "service engine soon" light, and an extremely hard shift. The shift points are even 1000+rpm higher. Just going from park to drive barks the tires (with my foot on the brake). I have a 2001 Chevy Suburban 2500, 2WD w/ 6.0L engine. We purchased it from a Chevy dealership back in 2002. It was a GM buy-back, for the same reasons it's now having. NO DTC's, NO CEL. Having a problem with stalling. It usually happens after backing out of parking areas when vehical returns to idle while shifting from reverse to drive. Come join the discussion about performance, bulletproofing, modifications, classifieds, troubleshooting, maintenance, and more!Chevrolet's best-selling truck will also become its first fully electric truck when the Silverado EV debuts for the 2024 model year. 4 rear main wear ring. i. Class I crate engines generally produce about 10% more horsepower and torque over the. The only part of the ignition system I haven't tried replacing or inspecting is the control module. I've had to replace the ignition module that sits at the base of the distributor a few times, but the failure mode was always that it would start and run, but wouldn't apply any advance, run a little rough, and would throw a trouble light.

Jun 22, 2015 · Step 3 – Check the driveshaft. It could be loose, or out of balance. Out of the three most common causes for vibrations, this is by far the most costly or complicated one. There have been numerous reports on Chevy forums about owners experiencing loose driveshaft joints, or out of balance driveshafts that lead to big vibrations at the wheel..

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I had a 89 GT 150 that would load up if you didn't keep the engine level while at idle. 0 out of 5 stars 4. 1977-1978. $ 129. 6 Billion Through Early Results, Upsizing and Settlement Date for Cash Tender Offers and Planned Redemption of its Remaining 8. 150V+ N/A Here you will find Evinrude service manuals and Evinrude owners manuals for 2011 or newer Evinrude outboard engines.. 91 Chevy K 1500 350 idle problem. diverdown91. 03-21-2004, 11:00 PM. This is a great informational site. Here is what I have 91 Chevy K 1500 Silverado 350 Automatic 88,000. I have replaced plugs, fuel filter, distributor cap, plug wires, Mapp sensor and EGR valve. Mar 26, 2014 · So, when the EGR valve gets stuck open, it isn't able to stop the flow of exhaust gas from entering the intake manifold and thus the combustion chamber and your pickup or SUV will idle rough. Here's a few more specific symptoms you'll see: Rough idle. Code 32: EGR System Problem. Code 33: MAP Sensor Signal High. Bad gas mileage..

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March 2007. Greetings: I picked up my 2007 Silverado K1500, 4x4 Crew on Friday, March 9th and noticed the same problem. Rough shift from 1st to 2nd. It had 5 miles on it when delivered. Now at 36 miles the shift is smooth. I attributed the rough shifting to incomplete trans fluid distribution.

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07-21-09 08:44 PM - Post# 1739606 Hello all, great forum, just found it and joined! I have an 89' 1500 P/U 5.7 TBI with some strange issues... SYMPTOMS: Cold or hot starts, will fire right up, will rev RPM's up like a normal start but dies right away..

10-08-12 01:26 PM - Post# 2277892. In response to Chevytech. Try squirting some WD40 around the base of the throttle body and see if the idle changes. If so you might have an leaky throttle body gasket.

Customer complaint bad gas mileage and a surging condition at idle, sometimes. Problem: excessive corrosion internally on the Engine Coolant Temperature Sens.

Chevy silverado v4 mode vibration fix 2005 gmc yukon ... 2019 · If your car sputters when you step on the gas, it’s crying for help. 7 parts air 2011 Chevy Traverse problems. Chevy Traverse - (Car ... inAnother common cause of shaking when accelerating is worn or warped brake pads. 2014 Chevrolet Traverse V6-3. 1991 Chevrolet. The truck when at normal running temperature and at idle will idle fine for about 5 to 10 seconds then all of a sudden the idle speed drops to a point that I think it may stall then it revs up and surges then settles out and idles fine for about 10 seconds then this drop and surge repeats about every 10 seconds. 1991 Chevrolet Silverado K1500 5.7L 350. High idle due to new idle air control valve not fully extending after - Answered by a verified Chevy Mechanic ... This problem occurred several months prior but went away after not driving the car for ... 1991 Chevrolet Silverado C1500 Extended Cab w/5.7 liter (350) engine, automatic w/AC, 98K miles. hello all,, i have a Chevrolet 1500 Silvrado Z71 2003 with start problem, it will not crank at all,, battery good and took it to the dealer and started fin without any problems there, but some times it will not crank at all, but it will start if i keep try for 10 or more times!!!.

The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. 2. Check Engine Light comes on.

Provide more consistent voltage to eliminate engine rough idle problems Platinum connector threads reduce the number of connection points for faster reaction to change. ... 1991 Chevy R3500 Silverado; 1991 Chevy V3500 Cheyenne; 1991 Chevy V3500 Silverado; Related Searches. 1991 Chevy CK Pickup After Market Accessories & Parts Online;.

Apr 02, 2010 · hoping to reach asemaster35yrs on same prolem with 91 1500 silverado 4x4. i still have same problem i dicconnected and plugged brake booster hose and still same problem i also removed the idle air control and cleaned the cavity in the throttle body and the idle climed to 1200 rpm but it seems to run better except for the high idle.. In this video we discuss (and rant) common problems with Chevrolet TrailBlazer and GMC Envoy vehicles. So, if you too are ... hose etc. Year 1991. 0l Diesel Engines for a looong time (e46 330d, e39 530d, e61 ... (straight 6), oil pressure is erratic, goes from reading 40# to 0# at idle. Chevrolet Trailblazer Car is overheating Inspection.

I've been having this problem with my truck for a while, and just cant seem to solve it. Every once in a while when I fire it up, I get a high idle, plus the "service engine soon" light, and an extremely hard shift. The shift points are even 1000+rpm higher. Just going from park to drive barks the tires (with my foot on the brake).

In this video, I will show you how to set the base idle for your Chevy or GM V8 engine. This will apply mostly to 1987-1998 vehicles with Throttle Body Inje.... This video was uploaded from an Android phone. I have a 2001 Chevy Suburban 2500, 2WD w/ 6.0L engine. We purchased it from a Chevy dealership back in 2002. It was a GM buy-back, for the same reasons it's now having. NO DTC's, NO CEL. Having a problem with stalling. It usually happens after backing out of parking areas when vehical returns to idle while shifting from reverse to drive. Jul 17, 2019 · Less Fuel Mileage – Your Silverado’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your Silverado’s engine to blow.. Chevrolet Silverado engine problems aren't restricted to faulty sensors. For 1999 to 2017 models, especially the V6 and 5.3-liter V8 engines, oil consumption was a real concern. We're talking about 3 or 4 quarts between oil changes, and sometimes more.

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2000 chevy silverado high idle when i bump the trottle or just driving around When the high idle kicks in it also gives the trani an eractic shifting pattern. ... I was having a terrible problem with the wheel bearings on my 98 Chevy Cavalier and I suspect that using this website saved me plenty of time and money.

This is a video about rough acceleration rough idle low idle and possible stalling. Oct 31, 2010 · 10 Posts. Discussion Starter · #1 · Oct 31, 2010. Alright, i had posted before about my surging idle. I have a little update. So, the truck is a 92 k1500, has 20,000 miles on the new GM crate 350, new throttle body, rebuild trans about same time eng was put in. I just replaced the Idle Air Control valve because i was told that could be it..

Philly area. A TPS is a low-buck part. You've done enough diagnosis to try a new one. I don't think it will help, but it might. The TPS is one of the main sensor inputs on a TBI (speed/density) type system. When you unplug it, the ECM goes into "limp home" mode with a pre-set series of tables designed to have the best shot at keeping the engine.

The actual cost would be ,320 — a difference of ,320. 2005 Prius Reset Fuel Level Inclinometer; I have done that three times and still; I have the exact same problem with the fuel gauge on my 99 Silverado; Crew reset of fuel pump circuit breakers in-flight is prohibited (QRH CI; Technician should drive the vehicle to Oct 28, 2019 · If you love Chevy 4×4 check out this 2017 Chevrolet. 1991 Chevrolet Silverado C1500 Extended Cab w/5.7 liter (350) engine, automatic w/AC, 98K miles. Problem: Pickup starts and runs fine from cold and when moving. As soon as the thermostat opens (temp gauge starts to climb), pickup will stutter and die when pulling up to a stop light, when backing up, etc. without using a little gas pedal to keep the engine speed up. 09-14-2004, 05:43 PM. If the MAP was bad it will set the mil light (1991 check engine light name changed to mil malfunction indicator lamp) If you do not have a fast idle at start up then you might have a coolant temp sensor going bad. Its easy to check that with a scan tool and engine cold. The IAC (Idle Control Valve) is electronically adjusted by the on board computer. There is no way to manually adjust it. If you are having issues with the idle, the best remedy is to replace it. Mar 21, 2004 · This will make the engine speed up with the added air and the IAC will slam shut. Turn the engine off. Disconnect the lead to the IAC and plug the vacuum hose back in. Restart the engine and adjust the idle screw. Then shut down the engine and plug the IAC back in. It's worth a try if everything else fails..

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Apr 15, 2006 · 98 Chevy Silverado Idle problem, Does Not Idle well, until warmered up. oregon712. 04-15-2006, 01:51 AM. 98 Chevy Silverado K3500 7.4L. i'm still looking for answers .... The 4l80e transmission was found in a many heavy duty GM and high end luxury vehicles, such as Rolls Royce, Bentley, and Jaguar ranging from model years 1991 - 2013. Here is the complete list of 4l80e equipped cars and trucks. 1991-2013 Chevrolet C/K/Chevrolet Silverado/GMC Sierra 2500 & 3500. The idle air control valve is programmed to regulate and maintain the engine idle speed at a constant rate. If the valve fails or has any issues it can cause the idle speed to be thrown off. This may result in an unusually high or low idle speed, or in some cases a surging idle speed that repeatedly climbs and falls. 2. Check Engine Light comes on.

Best Throttle body cleaner https://amzn.to/2Yy2Vacnew IAC valve https://amzn.to/2YXCFkRTake out the iac valve, clean the nasty gunk off the part that moves i.... 8. The RPM on my engine does not come down when I come to an idle. 9. I am not getting as good of fuel economy as I think I should. 10. The engine is revving up and down when I come down to an idle. There is a large "sucking" sound coming from the throttle body when it is warmed up. My engine stalls or almost stalls when I come down to an.

1991 CHEVY S10 4.3 ENGINE WANT IDLE OR STAY RUNNING WHAT CAN I TRY ?SEEMED LIKE I WAS OUT OF GAS PUT ... We have the same problem mines 94. we have a spider injecter that went bad..300 part cheap at junk yard. we changed fuel filter,fuel pump,spark plugs / wires we were getting fuel all the way ... 1990 chevy silverado 1500 wont run.

So, one of the most common symptoms associated with a problematic idle air control valve (IAC) is, irregular idle speed. Because, the (IAC); is programmed to regulate and maintain the engine idle speed, at a constant rate. If the valve fails or has any issues, it can cause the idle speed to be thrown off. This may result in an unusually high or. Joined Apr 15, 2007. 226 Posts. #4 · Feb 28, 2008. Re: extream high idle problem on 1990 chevy 1500, 4.3 v6 TBI. Good afternoon. Yes the pcv valve circuit you decribe is correct.You might call it flow thru filtered crankcase ventilation.TPS is throttle position sensor-probably 3 or 4 wire sensor at throttle linkage.

Mar 26, 2014 · So, when the EGR valve gets stuck open, it isn't able to stop the flow of exhaust gas from entering the intake manifold and thus the combustion chamber and your pickup or SUV will idle rough. Here's a few more specific symptoms you'll see: Rough idle. Code 32: EGR System Problem. Code 33: MAP Sensor Signal High. Bad gas mileage..

1991 chevy 1500, changed almost everything and still misses going down road sometimes, can't figure it out, please help. 1 Answer. we have changed out almost everything but still runs rough & misses going down highway. does fine in idle and at low speeds , this happens on hwy, loses speed sometimes all the way down to 35 miles an. Sep 04, 2012 · Runing rich on idle can have several causes, for example: - Throttle Position Sensor failed or misadjusted. - Idle Air Controller (IAC) - Coolant Temp Sensor. - Fuel Pressure Regulator. - Obstruction in the fuel return lines to tank. - Pressure build up in tank due to failed venting system..

1991 CHEVROLET SILVERADO. 5.7L. V8. Ive got a 91 silverado 350 with some idle problems. When you first start it u need to give it throttle for a few seconds to keep er running and when she does stay running she idles really.

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STEP SIX: Restart the engine and again shift into drive or neutral. Allow engine to run for at least 5 minutes. STEP SEVEN: Shut off engine for 10 seconds and restart. STEP EIGHT: That should do it. With engine stabilized and in closed loop, the IAC motor values should be between nine to 12 counts.

A dirty throttle body can lead to stalling in your Silverado. If you let off of the gas coming to a stoplight and it stalls for a second or two and recovers itself, it very well could be a dirty throttle body that is causing the problem. Here's a great YouTube video from EricTheCarGuy. on how to clean a throttle body. So, one of the most common symptoms associated with a problematic idle air control valve (IAC) is, irregular idle speed. Because, the (IAC); is programmed to regulate and maintain the engine idle speed, at a constant rate. If the valve fails or has any issues, it can cause the idle speed to be thrown off. This may result in an unusually high or.

Your problem could be the starter drive gear is loose and hitting the flywheel, a loose flywheel bolt, or a cracked flywheel. Cracked fly wheel usually gets louder as it gets hotter, or under heavier load. Starter drive gear sounds more like a "Ting, Ting". Tin sort of a sound. I would take that cover off and turn the flywheel by hand to see if. hello all,, i have a Chevrolet 1500 Silvrado Z71 2003 with start problem, it will not crank at all,, battery good and took it to the dealer and started fin without any problems there, but some times it will not crank at all, but it will start if i keep try for 10 or more times!!!. Classic Chevrolet / GMC Pickup Trucks. 1988-1999 Chevrolet & GMC C/K GMT400 Platform. Stalls When Warm? Sign up for FREE! Become a GM-Trucks.com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs.

My 2013 Silverado with the 5.3L V8 developed the same rough idle on start-up so many others have reported. 39,000 miles. No trouble codes and the rough idle only lasted a few seconds. After reading dozens of forums with multiple ideas I went with the cheapest/easiest first. Bought a can of throttle body cleaner and took off the throttle body (TB). It starts and idles fine but when I put it in drive it moves forward a little bit - Chevrolet 1991 Silverado 2500 question. Search Fixya. Browse Categories ... silverado 1500 ext. cab. my problem is while driving on the highway my truck ... 1991 isuzu pup idle problem.

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Mar 26, 2014 · So, when the EGR valve gets stuck open, it isn't able to stop the flow of exhaust gas from entering the intake manifold and thus the combustion chamber and your pickup or SUV will idle rough. Here's a few more specific symptoms you'll see: Rough idle. Code 32: EGR System Problem. Code 33: MAP Sensor Signal High. Bad gas mileage..

91 Chevy K 1500 350 idle problem. diverdown91. 03-21-2004, 11:00 PM. This is a great informational site. Here is what I have 91 Chevy K 1500 Silverado 350 Automatic 88,000. I have replaced plugs, fuel filter, distributor cap, plug wires, Mapp sensor and EGR valve. It is a great truck but sporatically while sitting at a stop light getting ready.

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The high idle was a vacuum leak - the gasket between the TBI and the intake manifold was bad. The underlying problem was the distributor. Apparently these late 80's early 90's Chevy 350 TBIs are known for developing microcracks in the Distributor Shaft, which decreases magnetism and can cause this problem. I hope this helps someone in the future.. Chevy Lumina 1991, Camshaft by Melling®. Melling offers a full line of OE replacement camshafts for cars, light duty, medium duty and heavy duty trucks. Melling listings include OEM applications to match the engine requirements desired... Right for your vehicle and lifestyle Made from high-quality materials for ultimate durability. I would start by checking the fuel pressure regulator and injectors, since pinching the return line helped that tells you that you need more pressure at the injectors, check for a torn diaphragm or broken spring in the regulator X2 along with the Idle air control valve!!! nitrosport_5 Registered Joined Aug 24, 2010 10 Posts. Is there an idle speed or other IAC-related DTC stored? Then there's probably a problem with the IAC, a vacuum leak, or a problem with the IAC control circuit. In most cases, cars built after 1996 with onboard diagnostics (OBD) II will set a code for a bad IAC. Many older cars with OBD I will also set a DTC when there's a problem with the IAC. Feb 12, 2017 · Also if you have some carbon build up on the valves and throttle body may also add to the hesitations. Have the fuel system pressure checked and if okay and within specification then have injection system serviced and the combustion system and throttle body cleaned out. This should fix the hesitations. Chevrolet 1991 hesitation.

Ensure your Chevy Silverado's fuel tank is between 1/4 and 3/4 full. Engine coolant temperature must be below 122°F and within 11°F of the ambient air temperature. Do not leave the key on prior to the cold start or the heated oxygen sensor (O2) diagnostic may not run. IDLE TIME: Run engine (do not drive) for 2 1/2 minutes with the air.

Aug 29, 2021 · So, one of the most common symptoms associated with a problematic idle air control valve (IAC) is, irregular idle speed. Because, the (IAC); is programmed to regulate and maintain the engine idle speed, at a constant rate. If the valve fails or has any issues, it can cause the idle speed to be thrown off. This may result in an unusually high or ....

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The actual cost would be ,320 — a difference of ,320. 2005 Prius Reset Fuel Level Inclinometer; I have done that three times and still; I have the exact same problem with the fuel gauge on my 99 Silverado; Crew reset of fuel pump circuit breakers in-flight is prohibited (QRH CI; Technician should drive the vehicle to Oct 28, 2019 · If you love Chevy 4×4 check out this 2017 Chevrolet.

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High idle 92 silverado with tbi eng. idles high for longer than it should even after eng. has hit running temp. ... 007 Idle Speed Problems Scan Data for Idle ... I need a diagram for a 1994 chevy silverado fuse box. 1994 Chevrolet K1500. Check Out the Latest Top Trucks Report!.

1993 Chevrolet C1500. Asked by maniac121 in Panama City, FL on November 05, 2009. Truck runs great when driving down the road and idles smooth for a couple minutes after coming to a stop. Then it develops a "stumble" that is very pronounced. I'm fairly confident it isn't ignition as the distributor, cap, plugs, wires, and coil are new. This is a video about rough acceleration rough idle low idle and possible stalling. 1992 Chevy K1500 5.7: while driving truck it. started bucking, rpms rapidly going up and. down. If I try to push on gas it eventually. would backfire and smelled rich. Replaced. wires, plugs, distributor cap/rotor, tps, ignition module, map, IAC, engine coolant. temp sensor, rebuilt fuel pressure regulator..

10-08-12 01:26 PM - Post# 2277892. In response to Chevytech. Try squirting some WD40 around the base of the throttle body and see if the idle changes. If so you might have an leaky throttle body gasket. Question type: General My 1991 Chevy Silverado starts up ok, but has a rough idle until it warms up. Once it is warm, it runs good unless you try to accelerate real fast. It then bogs and backfires thru the Carb and exhaust. Have replaced plugs, PVC valve, cap and rotor, MAP sensor, O2 sensor and exhaust pipes. When I. Problem Description. A dirty throttle body may cause a lower than normal idle and possible stalling condition. Performing a throttle body service will commonly correct this concern. 23 people reported this problem. 6 comments.. Have the throttle body and plate cleaned with a carbon cleaner. Be sure to get it clean. Open the throttle and clean the entire body and the plate. This will usually fix this condition. This is assuming there is no vacuum leak, as that can also cause a low speed/idle stall. 2004 Chevy 1500. Vortec 4.3 V6..

Best Throttle body cleaner https://amzn.to/2Yy2Vacnew IAC valve https://amzn.to/2YXCFkRTake out the iac valve, clean the nasty gunk off the part that moves i....

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The truck when at normal running temperature and at idle will idle fine for about 5 to 10 seconds then all of a sudden the idle speed drops to a point that I think it may stall then it revs up and surges then settles out and idles fine for about 10 seconds then this drop and surge repeats about every 10 seconds. Chevrolet Silverado engine problems aren’t restricted to faulty sensors. For 1999 to 2017 models, especially the V6 and 5.3-liter V8 engines, oil consumption was a real concern. We’re talking about 3 or 4 quarts between oil changes, and sometimes more.. Manufactured using the highest grade materials and the... $1,199.70. ACDelco® Genuine GM Parts™ Carburetor Accelerator Cable. 0. # 4871322262. Chevy CK Pickup With Code TN 1991, Genuine GM Parts™ Carburetor Accelerator Cable by ACDelco®. Bring your vehicle's fuel system back to its top shape with this top-notch part. To reset my TCM I turn on the key to the on position press the gas pedal to the floor for 10 seconds and then turn the key off then release the gas pedal and wait about 5 minutes to restart the engine. Like. (74) Rob November 4, 2020. I ha e a 05 gmc sierra put a new transmission in put it gear and have no power any idea. The Chevrolet truck ignition switch problem might require a new ignition switch. Learn about the security problems associated with a bad lock cylinder. Find replacement parts and repair tips for both Read More. Fix the Chevy Engine Oil Pressure Problem for Good. Jul 05, 22 02:02 PM. Jun 11, 2021 · Although Chevrolet has been making trucks since 1918, the Silverado has only been around since 1999. We take a look at the best and worst years. For over a century, Chevrolet has been building trucks to get America to work. The 1918 One-Ton owns the title of being the first purpose-built Chevy truck. Times were different, and the One-Ton barely ....

Oct 10, 2020 · Wherever the spraying of water causes a noticeable change in the engine's idle, that is the area with the vacuum leak. More Silverado, Suburban, Tahoe, Sierra, And Yukon Tutorials. You can find a complete list of V8 Chevrolet Silverado (Suburban, Tahoe) and GMC Sierra (Yukon, Yukon XL) tutorials in this index: GM 4.8L, 5.3L, 6.0L Index Of Articles.. So, when the EGR valve gets stuck open, it isn't able to stop the flow of exhaust gas from entering the intake manifold and thus the combustion chamber and your pickup or SUV will idle rough. Here's a few more specific symptoms you'll see: Rough idle. Code 32: EGR System Problem. Code 33: MAP Sensor Signal High. Bad gas mileage. Nov 24, 2013 · The truck idle drops and lopes and occasionally completely stalls. This usually happens when driving slow in town... backing out of parking space, letting off gas when coming to a stop sign or to park etc. It does fine to start and accelerate. I have done a tune up including oil and filter, fuel filter, spark plugs, wires, cap and rotor..

I would start by checking the fuel pressure regulator and injectors, since pinching the return line helped that tells you that you need more pressure at the injectors, check for a torn diaphragm or broken spring in the regulator X2 along with the Idle air control valve!!! nitrosport_5 Registered Joined Aug 24, 2010 10 Posts. 1991 Chevy C1500 intermittent problem. Failed smog. 169,000 miles, 350 w/air, Auto. Intermittent rough idle/stall combined with what feels like vacuum assist on brakes going out. Failed smog (low 240 ppm and high speed 1830 ppm hydrocarbons). Replaced plugs,wires,rotor, dist cap and oil change. NO CHANGE. Tried to get computer trouble codes but ....

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Chevrolet Silverado engine problems aren’t restricted to faulty sensors. For 1999 to 2017 models, especially the V6 and 5.3-liter V8 engines, oil consumption was a real concern. We’re talking about 3 or 4 quarts between oil changes, and sometimes more.. I have a Quadrajet on a 350/300, it was rebuilt but the secondarys will not open when the throttle is wide open. I can manually open the secondarys and everything works fine. All. Jun 04, 2022 · Published on. June 4, 2022. The GM 2.7-liter L3B Turbo four-cylinder engine for Chevy Silverado and GMC Sierra pickups is meant to change minds about power and torque in a small package. It seems this tough engine has everything incorporated into it. Stop-start cylinder deactivation, direct injection, variable valve timing, thermal management .... High idle 92 silverado with tbi eng. idles high for longer than it should even after eng. has hit running temp. ... 007 Idle Speed Problems Scan Data for Idle ... I need a diagram for a 1994 chevy silverado fuse box. 1994 Chevrolet K1500. Check Out the Latest Top Trucks Report!.

Jul 17, 2019 · Less Fuel Mileage – Your Silverado’s engine management computer is constantly adjusting the air/fuel ratio and timing to get optimal combustion. When the fuel injectors aren’t working properly it can’t do that and fuel mileage suffers. Knock/Detonation – Detonation can cause your Silverado’s engine to blow.. 8. The RPM on my engine does not come down when I come to an idle. 9. I am not getting as good of fuel economy as I think I should. 10. The engine is revving up and down when I come down to an idle. There is a large "sucking" sound coming from the throttle body when it is warmed up. My engine stalls or almost stalls when I come down to an. 1991 CHEVROLET K1500 PICKUP 5.7L V8 Idle Air Control (IAC) Valve | RockAuto.

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The IAC (Idle Control Valve) is electronically adjusted by the on board computer. There is no way to manually adjust it. If you are having issues with the idle, the best remedy is to replace it.

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I purchased a 2001 8.1 2500HD Silverado (used from dealer) about a year ago it ran great until recently. I am now experiencing stalling problems when warmed up approx. between 140*f to 160f*, when it stalls its not constant, its happens when highway driving or standing in line (low or fast idle)when it does stall radio and other electrical items still work, idiot battery light flickers slowly. 1991 Chevrolet Blazer engine problems with 4 complaints from Blazer owners. The worst complaints are broken crank, runs roughly after warmed up, and stalls, irregular idle speed when cold.

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Aug 30, 2019 · August 30, 2019 by Jason. There are quite a few reasons why your Chevy Silverado could be idling rough. An internal combustion engine needs air, fuel, and spark in order to achieve ignition. When one or more of these variables is off it can lead to a rough idling condition. Most of the time the culprit is going to be the ignition system .... Best Throttle body cleaner https://amzn.to/2Yy2Vacnew IAC valve https://amzn.to/2YXCFkRTake out the iac valve, clean the nasty gunk off the part that moves i. This is a video about rough acceleration rough idle low idle and possible stalling.

The truck when at normal running temperature and at idle will idle fine for about 5 to 10 seconds then all of a sudden the idle speed drops to a point that I think it may stall then it revs up and surges then settles out and idles fine for about 10 seconds then this drop and surge repeats about every 10 seconds. Chevrolet Silverado 1500 Stalling or Low Engine Idle Speed Due to Dirty Throttle Body - 23 reports. Learn about this problem, why it occurs, and how to fix it. ... idle problems replaced master flow valve still have same idle problem ,almost cuts off at times and surges when rpm goes up . Report. 2000 Chevrolet Silverado 1500 49,500 mi, Visitor. 1993 Chevrolet C1500. Asked by maniac121 in Panama City, FL on November 05, 2009. Truck runs great when driving down the road and idles smooth for a couple minutes after coming to a stop. Then it develops a "stumble" that is very pronounced. I'm fairly confident it isn't ignition as the distributor, cap, plugs, wires, and coil are new. Oct 09, 2010 · Re: 1990 chevy silverado 5.7L will not idle. Hi cmorphis. Remove the IAC solenoid and test it for dead spots ,the plunger is most likely stuck on one position. When your done with the IAC hook up a fuel pressure tester and test the fuel pump, the readings should be somewhere between 12-15 psi. post back your findings.. Mar 21, 2004 · This will make the engine speed up with the added air and the IAC will slam shut. Turn the engine off. Disconnect the lead to the IAC and plug the vacuum hose back in. Restart the engine and adjust the idle screw. Then shut down the engine and plug the IAC back in. It's worth a try if everything else fails..

The idle switch is connected to the ECU, and the full throttle switch to the A/T computer. Jul 10, 2021 · About Sensor Chevy Location Speed 1989 Silverado 1991 Chevy Truck 5 speed experts Discussion in 'Transmission & Driveline Topics' started by f-body, Aug 20, 2007. The idle air intake ensures your Silverado maintains a consistent idle, even when it powers vehicle functions. When the air control valve for Chevy Silverado is clogged, it likely to lead to an instant, irregular deceleration as you lift your foot off the pedal, causing a backfire through the tailpipe and loading up the engine with surplus fuel..

1991 CHEVROLET K1500 PICKUP 5.7L V8 Idle Air Control (IAC) Valve | RockAuto. Have the throttle body and plate cleaned with a carbon cleaner. Be sure to get it clean. Open the throttle and clean the entire body and the plate. This will usually fix this condition. This is assuming there is no vacuum leak, as that can also cause a low speed/idle stall. 2004 Chevy 1500. Vortec 4.3 V6.. Step 2: Locate the port for the OBDII reader. The diagnostic link connector, or DLC, is the front door that leads right into the digital innards of your Silverado's computer. It's found under the driver's side dashboard, usually just to the left of the steering column. 1991 Silverado - odd problem ... Automotive Forums .com Car Chat > Chevrolet > Nonspecific > 1991 Silverado - odd problem with starting . 1991 Silverado - odd problem with starting. cccj. 07-20-2005, 01:45 PM:confused: V6 TBI 140,000 miles Has been running ruff on and off for a couple of weeks, thought it was a gas problem or module. 2 days ago.

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Dec 10, 2017 · 1991 chevy Silverado 5.0 305 engine,has a rough idle,wants to stall at stop signs and bogs down when accelerating.I've replaced the following-egr valve,temp sensor,map sensor,vacuum solenoid,fuel filter,no difference.Then I replaced the throttle sensor and the idle air control valve and now it won't idle at all...... 0helpful 1answer.

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Runing rich on idle can have several causes, for example: - Throttle Position Sensor failed or misadjusted. - Idle Air Controller (IAC) - Coolant Temp Sensor. - Fuel Pressure Regulator. - Obstruction in the fuel return lines to tank. - Pressure build up in tank due to failed venting system. I purchased a 2001 8.1 2500HD Silverado (used from dealer) about a year ago it ran great until recently. I am now experiencing stalling problems when warmed up approx. between 140*f to 160f*, when it stalls its not constant, its happens when highway driving or standing in line (low or fast idle)when it does stall radio and other electrical items still work, idiot battery light flickers slowly. The idle air intake ensures your Silverado maintains a consistent idle, even when it powers vehicle functions. When the air control valve for Chevy Silverado is clogged, it likely to lead to an instant, irregular deceleration as you lift your foot off the pedal, causing a backfire through the tailpipe and loading up the engine with surplus fuel.. Classic Chevrolet / GMC Pickup Trucks. 1988-1999 Chevrolet & GMC C/K GMT400 Platform. Stalls When Warm? Sign up for FREE! Become a GM-Trucks.com Member Today! In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs.

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Here are the most common problems that would cause a Chevy Silverado to idle rough: A fouled plug VS a brand new plug Ignition System Here are the main components of the ignition system, as well as what would cause them to make your Silverado idle roughly.

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After trying several other fixes I finally diagnosed and repaired the problem part. The throttle body gasket had broken and was letting in too much air caus.

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Chevrolet Silverado engine problems aren't restricted to faulty sensors. For 1999 to 2017 models, especially the V6 and 5.3-liter V8 engines, oil consumption was a real concern. We're talking about 3 or 4 quarts between oil changes, and sometimes more. 1991 Chevrolet Silverado K1500 5.7L 350. High idle due to new idle air control valve not fully extending after - Answered by a verified Chevy Mechanic ... This problem occurred several months prior but went away after not driving the car for ... 1991 Chevrolet Silverado C1500 Extended Cab w/5.7 liter (350) engine, automatic w/AC, 98K miles.

The 1991 Chevrolet Blazer has 1 problems reported for stalls, irregular idle speed when cold. Average repair cost is $210 at 120,000 miles.
My 1991 Chevy Silverado pick-up with a 5.7 liter motor hesitates and stumbles at take off or stops at times ... runs great on freeway though. My car has 18000 miles. My car has an automatic transmission. If your fuel pressure is low or you have sticking clogged injectors you may get the hesitation and stumble on acceleration but run good at cruise.
Jun 11, 2021 · Although Chevrolet has been making trucks since 1918, the Silverado has only been around since 1999. We take a look at the best and worst years. For over a century, Chevrolet has been building trucks to get America to work. The 1918 One-Ton owns the title of being the first purpose-built Chevy truck. Times were different, and the One-Ton barely ...
Wherever the spraying of water causes a noticeable change in the engine's idle, that is the area with the vacuum leak. More Silverado, Suburban, Tahoe, Sierra, And Yukon Tutorials. You can find a complete list of V8 Chevrolet Silverado (Suburban, Tahoe) and GMC Sierra (Yukon, Yukon XL) tutorials in this index: GM 4.8L, 5.3L, 6.0L Index Of Articles.