Unstable idle
Thread Starter
6th Gear
Joined: May 2004
Posts: 6
Likes: 0
From: Jacksonville Florida
Unstable idle
I have a 94 coupe LT1 and lately
after engine is running at normal
operating temp. I will get a real
unstable idle, foot has to be on brake
or car will jump. I checked for vac. leaks
none that i can find. With a/c on, it
is real bad. driving down the road there
is no problem.
Thanks for any help
yellowvette94
after engine is running at normal
operating temp. I will get a real
unstable idle, foot has to be on brake
or car will jump. I checked for vac. leaks
none that i can find. With a/c on, it
is real bad. driving down the road there
is no problem.
Thanks for any help
yellowvette94
Last edited by yellowvette94; Aug 3, 2004 at 08:09 PM.
Advanced
Joined: Feb 2003
Posts: 97
Likes: 0
From: Richmond CA
TTT for you 'cause I've been having this problem also. I had new PCV and fuel filter put in last year. Seems to only happen when weather is real hot. During last winter it would very seldom come on, but summer comes, it'll do it every single time I take the car out and car's had time running around.
It seems like the ECM detects extra air , or TPS is telling ECM of a change in throttle position, or something...I have in mind to replace the TPS (throttle position sensor) and the IAC (Idle air control) sensor in the future.
Hopefully someone out there has seen this problem and gotten a fix for it.
It seems like the ECM detects extra air , or TPS is telling ECM of a change in throttle position, or something...I have in mind to replace the TPS (throttle position sensor) and the IAC (Idle air control) sensor in the future.
Hopefully someone out there has seen this problem and gotten a fix for it.
Last edited by gab; Aug 7, 2004 at 04:50 PM.
