The idle is high and I've check for vacuum leak.

Tiny
WEHRWEIN
  • MEMBER
  • 1984 GMC SIERRA
  • 4,000 MILES
The idle is high and I've check for vacuum leak but it was fine. What else can it be
Tuesday, February 5th, 2013 AT 3:45 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,179 POSTS
Do you have a carb on the vehicle or is it fuel injected? If fuel injected, check the idle air control valve. If it has a carb, you can adjust curb idle speed on the carb itself.
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Tuesday, February 5th, 2013 AT 3:06 PM

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