A/C clutch, cycling switch or bearings?
1992 Taurus GL Wagon, 3.8L V6 -
Recently my engine started making a grind/whir/airy noise while stopped (pitch increases as rpms raise, so the noise is not noticable but it's still there I'm sure).
I localized the noise to the A/C compressor, and noticed that when the A/C is OFF the clutch plate seems to spin, stop, spin sporatically. When the A/C is on, it seems to spin all the time, then stop randomly for short periods of time (accompanied by a louder screeching noise).
I assume what's happening is the clutch is not fully disengaging, and not fully engaging.
My question is this: is my A/C clutch bad? Is there a way to diagnose this without taking off the a/c compressor? Also, is the cycling clutch switch possibly a culprit, or perhaps another component of this electronically controlled clutch system?
Any thoughts or pointers would be GREATLY appreciated. Thanks in advance.