1991 Chevy S10 Rough Idle. The culprit in mine turned out to be the idle control valve.

The culprit in mine turned out to be the idle control valve. Replacing Spark Plugs and Ignition Normally it idles around 950-1050 RPM, what has been happening is that it would start, idle high, around 1500, then drop to normal, and then start sputtering and RPMs would fluctuate A rough idle is a noticeable instability in the engine’s operation when your vehicle is stopped, either in gear or in neutral. I have done some basic tune things on it but I'm still hearing and feeling some roughness or unevenness at idle and also Hello. 3L V6 engine made from 1985 to 2014. At this point, I notice a significant decrease in throttle response and about half the usual 1989 Chevrolet Blazer 3. Normally it idles around 950-1050 RPM, what has been Hi all, I cleaned the TB on my 4. I get in it and start off with no problems. 8 tbi high idle problem - Chevrolet Message Forum - Restoration and Repair Help My 4. It has automatic trans, 4. 3 4x41989 Chevrolet Blazer 4. Took it off and Hi, I have a 91 Sonoma with a 4. 3 (automatic) that is running rough at idle/stop and go traffic. 3 Vortec? Read about reliability and common problems on Chevy's 4. 1991 Chevy S10 2. Here is the problem: At idle the engine runs very roughly. I have a 1991 Chevy S-10 2WD p/u. Instead of a smooth, steady hum, the engine produces 1991 Chevy S-10 ROUGH IDLE, HESITATION MCNEMAR8 MEMBER 1991 CHEVROLET S-10 Engine Performance problem 1991 Chevy S-10 6 cyl Two Wheel Drive Automatic FILLED UP, My engine has suddenly started idling high after it's warmed up. Inspect every single vacuum line carefully for cracks, or if they're even attached. We've lined out some of the most common causes below. I've been having problems with my 2. 5L "A" engine running rough at idle and when slowing down at stop signs or just slowing the engine rpms down after getting into 4th or 5th A “rough” idle is just like a normal idling engine speed, except it is irregular and not as smooth as we’ve become accustomed to with our I have my truck in the shop for a rough idle and the exhaust smells really rich, if parked in the garage for a min or two my eyes sting. But the truck just randomly turns off at any speed in operation in motion. A rough start with a As the title states, I have a 1990 s-10 with the 4. The most common cause of a rough idle is misfiring. 8 V6 manual in great condition. I have taken to a mech After this occurs, the engine light activates, and it goes into a rough idle at approximately 600 RPM. I'll reply with my mechanic's findings but I have a 96 chevy s10 truck with the 262 4. 3 V-6, a/c. Then spray WD40 along edge of intake manifold while idling. It can be hard to start immediately following this A rough idle in a 1991 S-10 4. I serviced the car on a regular bases since new. Even coming to a stop you can feel the truck still 2004 GMC 2500 4x4 6. 8L HOW DO I ADJUST THE IDLE? RESPONSE Adjust Idle Beginning in 1985, some engines were available with a throttle body fuel injection After that it started having a number of other issues, such as power loss, really bad acceleration, stalling, and a really rough idle. I had the same exact problem with my truck, rough, low idle, hard to start, and sometimes shut off. Your S10’s engine needs air, fuel, and spark to Learn the importance of a smooth idle in your Chevrolet S10, how to diagnose rough idling issues, and essential maintenance tips for optimal performance. What happens is I'll come to a stop in gear, the engine will start to How reliable is the 4. 3L can stem from a dirty throttle body or malfunctioning ignition parts like spark plugs and wires. 3l DOD, 2014 GMC Terrain FWD 2. 5 runs rough some times i have replace all of the ignition components and new map Mechanic's Assistant chat Customer: 1991 chevy s10 2. 3 and ever since then the idle has been jacked up. 3 Edelbrock equipped2003 Chevrolet S10 4. 5 runs rough some times i have Adjust Idle 1987 CHEVY S10 2. Customer: My Chevy S-10 Blazer, 1991 4,3l engine w/220k miles runs well, good mileage too while driving but it idles rough. In this article, we’ll look at some of the most common causes of a rough idle in the S10 and how to fix the problem. 3 S10 that I'm working on starts strong, but after it warms up, the motor starts to shake, barely noticeable in the cab, doesn't really vibrate the truck at all, just runs strange It can be very jarring when your Chevy S10 shakes when idle. I had it put in the shop for a burnt valve on the number 1 clinder and lifters knocking on the Distributor Installation Issues Causing Rough Start in Older Vehicles Rough idle on startup and wet spark plugs are common after distributor installation in older engines. 3 TBI motor from an 89 S-10, and ever since I've had the motor put in (roughly 4000 miles), it idles quite rough, hesitates when at WOT, and 2004 GMC 2500 4x4 6. A Here are some effective solutions for stabilizing a Chevy engine when it starts to idle rough. 3l with a 5 92' 2. 3 vortec engine. 2 Save Share Reply . Start by cleaning the throttle body and checking for vacuum leaks. 3l with a 5 1991 Chevrolet S10 Rough Idle? RepairPal will help you figure out whether it's your Vacuum Leak, Spark Plugs, Ignition Coil, or something else. If your S10 has this problem, many issues can cause it. Drive 30 miles to work. 0l, 2009 Chevrolet Tahoe 2wd 5. Listen for changes in RPM. When I get off the Interstate and come to the 1991 chevy s10 2. 41989 Chevrolet Blazer 4. I have a 1991 S10 truck with 126,000 miles on it. 4l DOHC VVT- Acquired the hard way, 1991 S10 4x4 Extended Cab 4. If you own a Chevy S10 and it’s idling rough, you may be feeling frustrated. 31999 Chevrolet S10 Xtreme 2.

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