Re: Cold Start - Rough Idle
Personally, I like Berryman's B12 ChemTool cleaner.
That said, the IAC only tends to have intake-related goo on it (exhaust goo - like in an EGR - is far tougher to clean); most any cleaner or lubricant/solvent - including WD-40 - will do the trick.
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2000 Windstar LX 3.8
1995 Contour GL 2.5
1986 Mustang GT 5.0 --> Sold, but missed on sunny days
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