Why does my 92 Pontiac Bonneville high idie when it gets worm?

Asked by William Apr 16, 2014 at 03:45 PM about the 1992 Pontiac Bonneville 4 Dr SSE Sedan

Question type: Maintenance & Repair

When u first start it it will ldel at 1000 rpm
but when it gets worm it will go up to 1500 i
would like to know why it does that

1 Answer
4,075

tikun answered 10 years ago

Two possibilities, either your Mass Air Flow sensor is dirty or the Idle Control valve are dirty or bad.

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