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1996 GMC Truck Repair Question


Topics covered: Body, Rpm, Trouble code.
Mileage: 16,300 miles.

Asked on January 18, 2011

Whats up

Idles at 2 2and a half rpms instead of 1 1 half
Avatar Asked by shallon

Answer

Replied on January 18, 2011

Make sure the throttle-valve closes. Clean the throttle-body and check the iac. Possible vacuum leak? Any applicable trouble codes? Something could be requesting a higher idle, like hvac? There could be other requests concerning the idle, hard to tell from here.

Tiny Answered by JDL (expert)
14,416 answers provided