My 94 GT just began having an issue with its ac. It still blows cold but when the compressor cycles on it makes a fairly loud rattling noise and when the clutch disengages it goes away. It's also quiet when the AC is off and the pulley free spins and no noise. At first I was thinking clutch but it seems to cycle on and off properly with no issues so I was thinking the bearing on the pulley. Trying to keep this as an inexpensive fix and would rather not have to pay for a new compressor and go through the hassle of evacuating and recharging the refrigerant. Anyone have any suggestions as to whether it's the ac clutch, the pulley bearing or needs a new compressor? 
