Question about 1993 Chevrolet C1500

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My 93 chev 1500 4x4 slight idle runs rugh surges

I have replaced everything exept the iac.. the truck sat for 2 months and now has this problem..any idias?

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The IAC may be slow to respond to input signal.
This is the Idle Air Control so it does affect the idle.
Might be a cause of your rough idle.

Posted on Sep 06, 2009

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