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engine surge while AC is running

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Old Apr 7, 2011 | 04:53 PM
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engine surge while AC is running

I have a 2001 F150. Whenever I am running the AC and I am at a stop light, the idle surges up and down. When I try to take off it hesitates for a second. I recently changed the plugs and cleaned the air filter.. What could be causing this?
 
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Old Apr 7, 2011 | 06:13 PM
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Sticky IAC valve, usually.
 
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Old Apr 8, 2011 | 05:57 PM
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What is a IAC valve?
 
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