No ac


Asked by Apr 03, 2015 at 12:32 PM about the 2000 Ford F-150 XLT Extended Cab LB

Question type: Maintenance & Repair

No Ac, I get 12v @ the compressor when ac is commanded, freon full, thinking bad
compressor, any other ideas?

2 Answers


Make sure the voltage to the compressor switches on and off via the switch inside the vehicle. If you do, have someone turn on the a/c with the engine at idle. The clutch on the front of the compressor, inside the pulley which turns, should engage, or try to, there is normally a click. Does it click and engage or rattle then stop? A rattle to the clutch indicates the clutch has had it and can be replaced. If nothing happens there could be a problem with the electro magnet just behind the clutch which engages it. It could be a ground problem within the magnet or the magnet itself. The clutch and electromagnet can be replaced, usually, without removing the compressor if it is located in an easily accessible location. Determine what the problem is, clutch, magnet, or seized compressor then price out the parts vs a replacement compressor.

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