Question about 2004 Ford F150

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Compressor comes on but no cool air has freion and vents blow

The vents and heater works compressor works it is full of freoin but the tempiture does not change from just having the vents on with out the the ac ingageged 2001 ford windstar

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Your vehicle has the R-134 system. These systems usually don't have a charge site glass window. Just because the compressor turns doesn't mean the system is full. You need to hook up the hi and lo side of the system to evaluate the systems operation. Too much R134 will adversely affect the performance of the system producing warm air. You could have a bad expansion valve contributing to the systems malfunction. You can find the problem by hooking system to a set of manifold gages.

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