1989 Chevy Corvette

1989 CHEVROLET CORVETTE
113,800 MILES • V8 • 2WD • AUTOMATIC
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REDCORVETT
  • MEMBER
  • 1 POST
89 corvette - idle in drive pulsates plus/minus 100rpms - only does this when temp reaches 190 and above- vac lines have been checked, throttle body and maf cleaned and maf relays replaced new fuel And air filters - fuel rail pressure at 39psi and holds pressure
Feb 1, 2009 at 1:59 PM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
The IAC controls idle after warm up. You may want to remove and clean passages and pentil. It screws in on top of throttle body
Feb 2, 2009 at 12:45 AM
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