High Idle once warm
Thread Starter
5th Gear
Joined: Jul 2016
Posts: 5
Likes: 0
High Idle once warm
1995 6 sp. Cleaned throttle body off car. Replaced gaskets only. Put it back together. Idle was high. Bout 1200. Pushed down on throttle linkage and the idle went perfect. Took it out for a drive and it idled up to almost 2000 and would not come down tapping pedal. Pulled over, pushed on linkage. Fixed. Drived some more, rpm back and stuck at 2000. As soon as car starts to warm up it begins. Any ideas?
Le Mans Master
Joined: Feb 2005
Posts: 6,485
Likes: 566
From: Clearwater Florida
1995 6 sp. Cleaned throttle body off car. Replaced gaskets only. Put it back together. Idle was high. Bout 1200. Pushed down on throttle linkage and the idle went perfect. Took it out for a drive and it idled up to almost 2000 and would not come down tapping pedal. Pulled over, pushed on linkage. Fixed. Drived some more, rpm back and stuck at 2000. As soon as car starts to warm up it begins. Any ideas?
Thread Starter
5th Gear
Joined: Jul 2016
Posts: 5
Likes: 0
I tried this option tonight. No fix. Its almost like the linkage is slipping. The linkage touching the top stop screw doesn't move when I push on it. Only the piece that the throttle cable is attached to pushes down a little resulting in correct idle. Like that little screw is loose. Working it manually, no sticking. Put it in gear and the rpms climb. Thanks for your response
Instructor
Joined: Jun 2018
Posts: 236
Likes: 17
From: Stockton California
High idke
I tried this option tonight. No fix. Its almost like the linkage is slipping. The linkage touching the top stop screw doesn't move when I push on it. Only the piece that the throttle cable is attached to pushes down a little resulting in correct idle. Like that little screw is loose. Working it manually, no sticking. Put it in gear and the rpms climb. Thanks for your response
Melting Slicks
Joined: May 2013
Posts: 2,692
Likes: 349
From: Sacramento California
The throttle plate bushings are known to wear out and cause a hanging idle condition. I think that's what you have because you said physically pushing the throttle back will bring the idle back down.
I've never replaced these bushings myself but it may be in my near future and I know replacement bushings are available.
I've never replaced these bushings myself but it may be in my near future and I know replacement bushings are available.
Team Owner
Joined: Jul 2004
Posts: 28,475
Likes: 3,291
From: Hartford WI
Get a scanner and you can adjust the min air rate better than the FMS method which assumes 100% stock and 100% compliant with stock standards which you are not. You may have an air leak which can show up on the scan. Also you will need a scanner sooner or later so why not now?
