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  1. OEM Issues
    Hi, my envoy 2004 RPM needle will move up and down when i turn on the blower/vent or the a/c, and the engine will rev like its about to stall. what can be the cause of this? i tried to google it i found something about "IAC" idle air control valve, this might need cleaning or replacement. any...
    a/c engine revs engine stalls rpm vent
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