Rough idle tpi
#1
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Car: 1992 Z28 Camaro
Engine: 350 tpi
Transmission: Built 700r4
Axle/Gears: 3:42
Rough idle tpi
I have a 92 z28 with the 5.7 l98. In the past few months, getting a little worse as time went on, my car started running very odd when warm. Cold start is amazing, it starts and idles like a champ, but after driving for awhile at operating temp it starts to run a little rough, and it gets worse if i stop the engine then start it again soon after. Sometimes when it is at its worst, it will drop rpms really fast down to around 450 while braking and coming to a stop then it jumps back up and begins to run rough. This doesn't always happen. It'll happen for a day to a few days then quit for an amount of time i cant really measure, it's different half the time. I just want to know what you guys may think this issue is. Something that could be related, but possibly random, i was driving on the highway for about 40 minutes, when i stopped at a gas station for a drink. I went back out to my car to start it and the car wouldnt even crank. I lifted the hood for around 10 minutes and tried starting the car again and it started right back up and drove home, never had this issue again, but i believe it may have been a heat soaked starter. I should also note, that when i bought this car in 2014 it had a misfire, and after changing injectors and spark plugs, and some other small things it ran like a champ. I'm hoping this issue doesnt have to do with injectors or spark plugs because theyre new, but if it is the issue I'll gladly change them. Thanks for your responses, I'll be glad to answer any questions about the car to help pinpoint the issue. It's really began to bug me.
#2
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Car: 87 Iroc 5.7,67 SS Camaro,90 Formula
Engine: 355 AFR Superram LPE 219
Transmission: 700r4 3000 stall 4spd 5 spd
Axle/Gears: 3.27
Re: Rough idle tpi
If the ignition module on the distributor gets hot can this be the cause? I think you need to scan for codes.. I had a bunch of 5.0 Mustangs and they would crap out. You had to keep an extra module ($90) in the glove box w the special tool just in case. I'll let the experts chime in.
#3
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Car: 1989 Formula Firebird
Engine: Swapped 350 TPI speed density
Transmission: 700R4
Axle/Gears: 2.73 (soon to be 3.42)
Re: Rough idle tpi
Bump.
Also having similar issues. Would like to hear what other people have experienced and how they resolved the issue.
Also having similar issues. Would like to hear what other people have experienced and how they resolved the issue.
#5
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Car: 87 Monte Carlo SS
Engine: 89 350TPI Transplant
Transmission: 2004r
Axle/Gears: 3.73
Re: Rough idle tpi
Could possibly be your egr valve being stuck open. Having egr at idle will cause motor to run rough.
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