91 camero idels fast/slow

Asked by Apr 22, 2016 at 01:00 PM about the 1991 Chevrolet Camaro RS Convertible RWD

Question type: Maintenance & Repair

I have a 91 Chevy Camaro RS and when I start it it
idles fast then it idles low and then it goes fast
then it goes back slow does anybody know what
that might be.

1 Answer

275,155

Dirty throttle body and idle air control valve. They can clogged with carbon . You can buy cleaner at any auto parts store. UTube has some videos for instructions. If that doesn't work, look for vacuum leaks.

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