1999 Pontiac Grand Prix high idel

1999 PONTIAC GRAND PRIX
151,000 MILES • 6 CYL • 2WD • AUTOMATIC
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FRANK CORNISH
  • MEMBER
  • 1 POST
motor idels high some times around 2000 rpm 2 -3 times a week
Mar 4, 2010 at 10:27 AM
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MMPRINCE4000
  • ✓Experienced Mechanic
  • 8,548 POSTS
Remove and clean IAC (idle air control) valve, if problem persists, then a vacuum leak.
Mar 5, 2010 at 12:04 AM
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