Thread: high idle prob
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Old 01-12-09, 08:00 PM
Ranger Ranger is offline
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Cadillac(s): White Diamond '03 DHS
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Re: high idle prob

I suppose the IAC valve could be at fault. It IS what controls the idle, but then again, it gets it's commands from the PCM which gives those commands on other sensor information. Try pulling the IAC valve and cleaning it. I'm sure there is a procedure for testing it in the FSM.