Blazer Forum - Chevy Blazer Forums - Idle jumps to 2200 RPM at start

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FlatTopFoley

11-24-2009 03:44 PM

Idle jumps to 2200 RPM at start

Just got my baby back from the shop (ball joints, MAP sensor, some little issues) and one problem I asked them to look at was this idle issue. From a cold start, it jumps up to around 2000+ RPM, but after she warms up a bit its fine. I replaced the IAC about 6 months ago as a tune up and this has been a persistent problem.

swartlkk

11-24-2009 08:00 PM

Did the problem start after you replaced the IAC valve?

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