2003 250 6.0 FX4 Lariat....When I first start the truck and turn the a/c to max it blows out of the defrost for probably about 45secs and then it will blow out of the vents. I have figured out that if I turn it to a/c it will blow out of the vents and then I can turn it to max. Plus it does not seem to be as cold as it was before, it seems to get colder while the RPMs of the engine are higher than if I stop and the engine idles. Any ideas, its hot in South Carolina!!!!!
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