North American Turbocoupe Organization



High idle sometimes
dpmeeks Offline
Member
#1
after driving for awhile my car will sometimes idle up to 1500-2000 and then go back to normal. It doesnt do this all the time. I know its usually the TPS or IAC how do i determine which one is the problem for sure ??
Silver- 87, 5-speed,
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Pete D Offline
Administrator
#2
May not be either, but clean the IAC and check/reset the TPS. Have you checked codes and air leaks? (Yeah I know you have practically rebuilt that thing, but I got to ask) Big Grin

Personally, I don't thing the test will catch every bad TPS. I had one that tested good, but when I replaced it my problem went away
Pete Dunham


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dpmeeks Offline
Member
#3
LOL pete.. i cleaned the IAC when i installed the HG, no vac leaks or air leaks. I was just wondering whats more than likely bad the TPS or IAC trying not to waste money..
Silver- 87, 5-speed,
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Pete D Offline
Administrator
#4
If I had to guess, I'd go for the TPS
Pete Dunham


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TurboCoupe50 Offline
Posting Freak
#5
Use a meter(preferably analog) to verify TPS voltage operation through it's full travel... If it's OK, repl the IAC...
1988 Turbo Coupe331 AOD

1972 Comet GT

1969 Fairlane Cobra 428CJ 4-Speed
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