Well DOUG is partially correct. I may be talking semantics.... FORD used 2 compressors on the Ex's... the fs-10 and then the fx-15 - for all outward apopearances identical. The compressor is a unit unto itself - separate and distinct from the clutch unit. The compressor's input shaft has the clutch unit mounted on it. The clutch unit is also a separate unit, with its own independent sealed bearings. THAT unit engages when a power signal is present and hence the drive belt turns the compressor because the clutch is locked when powered. If the compressor bearings or innards are the trouble for you, unplugging that clutch will allow you to drive the Ex ok (w/o AC of course) because the compressor will not be turning, only the clutch will be freewheeling. IF THE CLUTCH bearings are the problem... unplugging it like I suggested won't help.....but! a new A/C clutch is not all that expensive. However most often (90% of the time) the problem is in the compressor, not clutch bearings. I hope that clears it up. Try unplugging and see.