1997 Gmc Sierra 97 Seirra S Idling Fine Drive Wants Stumble Hestate

1997 GMC SIERRA
180,000 MILES
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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.
Jan 30, 2013 at 11:41 PM
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JACOBANDNICKOLAS
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Has anything come loose again? Is the check engine light on? Have you checked for vacuum leaks and the fuel pressure to the engine?
Jan 31, 2013 at 2:59 AM
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