Focus Fanatics - View Single Post - Rough Idle only when the A/C is on
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Old 11-17-2012, 08:22 PM   #5
blakeclevenger
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Join Date: Nov 2012
Fan#: 105886
Location: Amarillo, TX
What I Drive: 2002 Ford Focus XZ5 DOHC Ztech 120k

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Yes the A/C runs just fine. I just try to leave it off since it causes the rough idle. So do I needs to change the IAC or is there more diagnostic that needs to be done? From what you are saying, may be it is a computer thing? I haven't received a check engine light yet, so I guess it isn't idling "that bad," but its definitely off and needs to be addressed.
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