Question about 1991 Chevrolet C1500
I have a 1991 chevy 1500 ext cab with a 350 motor and i noticed that when it idles it revs up and then down constently. What is wrong with it? What should i do?
You could also check to see if the idle valve is open and the seal around it is broken
Posted on Feb 13, 2014
Check engine light on? Does it run normal driving it? Sounds like a vacuum leak. Check the gasket under the throttle body.
Posted on Jun 05, 2010
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Posted on Jan 02, 2017
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