1989 Chevy Suburban idle

1989 CHEVROLET SUBURBAN
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JUSTALEX13
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  • 2 POSTS
Engine Performance problem
1989 Chevy Suburban V8 Two Wheel Drive Automatic

it has a high idle. i replaced the IAC valve with no improvement.
Jan 18, 2009 at 10:18 AM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Did you clean out the idle air control valve passages thoroughly and test the throttle position sensor-
Jan 18, 2009 at 10:23 AM
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JUSTALEX13
  • MEMBER
  • 2 POSTS
Thank you I will try that.
Jan 19, 2009 at 11:02 AM
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