94 idle issues
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Intermediate
Joined: May 2017
Posts: 43
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94 idle issues
Hey guys, i'm back with yet another problem. Today's problem is on a 1994 corvette c4. So about a week after replacing the TPS, the problem I've been having is back but not as bad as it has been. When i'm for say stopped at a red light, the car sometimes shakes and fluctuates rpm. Today I was watching the car at idle and I noticed a few things. 1. The car once warmed up sounds like a cylinder may not be firing at some points. The car drives fine though, it dosnt bog down when I push it. 2. When I revved up the car to 2k in park, after letting off the gas, the rpm dropped to about 1k rpm, mildly shook and just sounded like trash. Then after a few seconds, the rpm drops back to 700ish and went back to idle.
Any ideas on what is happening here? So far these parts have been recently replaced:
Coolant temp sensor
Both o2 sensors
MAP sensor
TPS
Also something that is note worthy is the car had its head gaskets replaced because of a bad leak (car sounded like a fish tank). All of this started happening after that was done.
Any ideas on what is happening here? So far these parts have been recently replaced:
Coolant temp sensor
Both o2 sensors
MAP sensor
TPS
Also something that is note worthy is the car had its head gaskets replaced because of a bad leak (car sounded like a fish tank). All of this started happening after that was done.
