high idle on a chevy truck 1500 1996

1996 CHEVROLET CHEYENNE
200,000 MILES
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ENRIQUE23J9
  • MEMBER
  • 1 POST
when you start it, it goes to 1000 rpm then when you drive it, it goes to 2000 rpm and it stays there...
Nov 22, 2011 at 4:52 AM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
i would look for a vacuum leak at the throttle body or a bad idle air control.

Roy
Nov 22, 2011 at 5:40 AM
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