high idle
Thread Starter
Heel & Toe
Joined: Dec 2008
Posts: 15
Likes: 1
high idle
I have a '95 corvette manual transmission. The idle on the car when first started runs at 1,500 rpm. After driving it for a half an hour or letting it idle until the coolant gets worm the idle will creep up to 2,100 rpm.
I check the hoses for vacuum leaks but can't find any.
Any suggestions as to what to try next?
I check the hoses for vacuum leaks but can't find any.
Any suggestions as to what to try next?
Advanced
Joined: Sep 2009
Posts: 69
Likes: 0
From: Houston TX
re-check for Vacuum Leak(s)
TPS (Throttle Position Sensor ... on the Throttle Body)
re-check for Vacuum Leak(s)
IAC (Idle Air Control valve... does a '95 have one?)
re-check for Vacuum Leak(s)
I'm still trying to nail down a similar issue on a '90 ... no luck yet, I really think it's a vacuum leak somewhere that I just haven't been able to track down.
TPS (Throttle Position Sensor ... on the Throttle Body)
re-check for Vacuum Leak(s)
IAC (Idle Air Control valve... does a '95 have one?)
re-check for Vacuum Leak(s)
I'm still trying to nail down a similar issue on a '90 ... no luck yet, I really think it's a vacuum leak somewhere that I just haven't been able to track down.
Burning Brakes
Joined: Dec 2000
Posts: 1,161
Likes: 0
From: Orangeburg, NY
After checking for vacuum leaks, as stated above, clean the throttle body, using throttle body cleaner, not carb cleaner. Remove and clean the IAC and the area where the IAC enters. Pipe cleaners should help make the job easier. Did you check for any trouble codes? The O2 sensor?
