Question about Chevrolet Avalanche

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When air conditioning is on and i come to a stop it idels rough up and down idel

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  • steve miranda Jun 11, 2013

    try cleaning your throttle body, that was happening to me.. cleaned out throttle body with cleaner and a clean rag..problem solved

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Not knowing the age- I will say that back in the days of carbs- there was a solenoid which increase the idle speed when the AC was turned on. This is done by the computer in a modern car, so your computer is not being told to raise the idle speed with the AC on. You may have an error code for this. either way looks like dealership to fix this one.

Posted on May 26, 2011

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Posted on Jan 02, 2017

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