Idle Air Control Valve

1994 CHEVROLET SILVERADO
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CHAS662
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Engine Performance problem V8 Two Wheel Drive Automatic

Engine idles low and oil pressure low when engine is idling. how do i get the engine to idle faster
Nov 10, 2010 at 9:28 PM
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STRAILER
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It sounds like you have a vacuum leak or the IAC motor needs to be replaced , here are some guides to help us get the problem fixed. These engine where famous for blowing the throttle body gasket out.

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and

https://www.2carpros.com/articles/how-to-replace-an-idle-speed-control-motor-iac

Please let us know what you find.

Cheers, Ken
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Sep 17, 2017 at 2:30 PM