What makes a 1995 GMC Pickup idel high while driving or setting in park? Doesn't do it all the time.

Asked by May 20, 2014 at 04:16 PM

Question type: Maintenance & Repair

4 Answers

Might check the throttal position senator it might be going bad

Or vacuum leak


Yes I agree on a vacuum leak but you can also adjust the throttle on the carburetor down if its a carbed engiu



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