Grinding/chattering noise can't figure it out, please help

Turbo99cobra

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Jan 19, 2010
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Ok guys got a problem with the car again and need some help. After the car warms up and I'm sitting at idle, when the a/c compressor starts to spin it makes a grinding/chattering noise that seems to get better when I apply some pressure to the clutch pedal. It always seems to happen when the rpm's drop whenever the a/c compressor starts to spin. Has this happened to anyone else?
 

01yellercobra

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Oct 5, 2005
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Your A/C has nothing to do with your clutch. If the sound goes away when you press the clutch in then your throw out bearing is on it's way out. The A/C compressor is a different problem.
 

3B99SVT

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Oct 9, 2005
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I'm guessing that when your A/C kicks in, the RPM changes to something that makes your TOB chirp/chatter. The grinding is a little confusing though -- a really bad TOB will grind when you push the clutch in.
 

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