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Old 06-12-2023, 11:56 AM   #2
JFP in PA
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Join Date: Feb 2005
Location: It's a kind of magic.....
Posts: 6,283
The DME controls the idle speed by sending a signal to the idle control valve, telling it to increase the idle speed slightly until the compressor turns off. I would start by looking at the wiring going to the valve, and if nothing is found, replace the valve.
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