Mechanics

GMC SIERRA ENGINE PROBLEM

1997 GMC Sierra • 180,000 miles

97 GMC seirra
I have a problem when it's idling it fine when I go to drive it it wants to stumble or hestate. Now a week ago I cleaned the throttle body and the plimu was a little loose so I tighten it. Then for a whole week it drove fine now it starting to do it again.
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Guest
January 30, 2013.



Has anything come loose again? Is the check engine light on? Have you checked for vacuum leaks and the fuel pressure to the engine?