Air compressor on 1995 Mercury Villager

Will it "smoke" if it is "going out"?
How important is it to repair the
air compressor?

Asked by for the 1995 Mercury Villager
The AC compressor is belt driven and sometime the AC clutch will freeze and since the belt has to constantly turn the water pump,power steering pump and alternator, So if the pulley or clutch on the AC compressor is frozen ( won't turn ) the belt will squeel and burn as its trying to spin the pulley.