have a '99 f150 4.6l. the a/c is not working. When I turn the a/c on the tach drops a bit, but it won't blow cold air. When I had it at the dealer they told me it was a bad clutch coil $350-$400 fix.They said the pressure was good. Has anyone had touble with this or repaired any.
It might be the coil, it might be any one of half a dozen other parts that have failed. Presumably, the dealership technician performed a thorough diagnosis and confirmed the coil was faulty. Perhaps, he just guessed. No way of knowing from here.
Check the resistance of the coil with an ohmmeter. Should be around 3 to 4 ohms. If that is good, the problem is something else.
