So, the AC in my 2012 Mustang went out...at 60K. The clutch was burned up. I just changed out the clutch and when the AC is on, the AC blows cold. Just like it should. But, if/when I turn off the AC, the compressor/clutch locks up. Of course the belt still runs over the pulley but the pulley doesn't freewheel. So, I guess I will be running the AC full time until I get this figured out. I'm going to assume this is exactly the same reason the clutch went out last time. Anyone here have any clue as to WTF is happening here? Thanks in advance.