1989 Chevy Suburban idle

1989 CHEVROLET SUBURBAN
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JUSTALEX13
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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 6:18 PM
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RASMATAZ
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Did you clean out the idle air control valve passages thoroughly and test the throttle position sensor-
Jan 18, 2009 at 6:23 PM
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JUSTALEX13
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Thank you I will try that.
Jan 19, 2009 at 7:02 PM
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