My A/C works fine when idling or going down hill. But once I accelerate, the pressure stops, it still cools just fine but there is no air blowing out. The back A/C works fine during this. I've had it hooked up to the computer and it says there is nothing wrong with it, but clearly there is. I've also had freon put in it as well. Does anyone know what the problem is? Also, I have a friend that has the same year and model as me and is experiencing the same problem. Factory defect maybe? Oh, my car is Ford Expedition 2004, Eddie Bauer
A/C problems on 2004 Ford Expedition
by rgaynor in Laguna Niguel, CA on August 27, 2010
ANSWER by bmdouble on August 27, 2010
you either have a vacuum leak in the main vacuum line to the a/c plenum,or the one way check valve is faulty.
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