Question about 2004 Ford F150

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Truck idles in park but drops to about 500rpms and lower if idling in drive and dies.

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Sounds like the idle air control vavle. when you put a load on the engine such as putting it in gear or using the ac or turning sharply, the iac is suppose to let more air in so the engine will idle up a little. if its stuck and you load the engine by pulling it in gear it will let the idle drop and possibly die.

Posted on Oct 03, 2009

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