my 1987 Sierra with throttle body is ideling super fast can anyone tell me whats going on ?

40

Asked by Jun 19, 2014 at 01:10 PM about the 1988 GMC Sierra 1500

Question type: Maintenance & Repair

2 Answers

66,705

Check for vacume leaks.

2 of 2 people found this helpful.
40

it was the idle air control isprayed it with WD40 and blew it out put it back in and its running smooth thanx for answers greatly appreciated

1 of 1 people found this helpful.

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