My problem seems to be that the clutch on the A/C compressor rubs and it makes a metal on metal sound, almost like a rattling. Then once the car is warmed up and the RPM's drop and the car has a little bit of a rougher idle, it almost looks like the pulley on the A/C compressor shakes. It almost seems as though the pully on the compressor is loose and so it rubs the clutch and it also shakes at lower RPM's, but I don't really know.
Any idea would be appreciated.