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Symptoms of a bad compressor bearing/clutch??? 700 1987

posted by  ian f. on  Fri Feb 28 01:44 CST 2003
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last visit: Sun Jan 30 15:23 CST 2011
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I am trying to determine what is causing the awful metallic rattling noise from the drivers side front of my 1987 745 turbo. I am guessing that it is the compressor clutch or bearing but have no experience with this particular area of the car, so I was looking for some input as to what sounds and symptoms a failing clutch or bearing makes.

Thanks guys,
Ian

PS Jason...if you see this, keep meaning to email you but have been having problems w/home computer which is where your last email resides. Talk with you soon.







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Symptoms of a bad compressor bearing/clutch??? 700 1987

posted by  B.C. on  Fri Feb 28 08:43 CST 2003
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last visit: Wed Mar 28 22:28 CST 2012
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This is a general answer, since I am a 240 guy. The compressor clutch bearing acts as a bearing only when the a/c is NOT engaged, otherwisw it the pulley and innards spin togather. Do you have the noise when the compressor is running?

In my experience there has been a noise when the a/c drive belt was too loose. It occurred only when the a/c was engaged and was the sound of the clutch being caused to slip when the belt's flapping took up and gave up slack.

Good Luck,

Bob

:>)







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Symptoms of a bad compressor bearing/clutch??? 700 1987

posted by  ian f. on  Sun Mar 2 09:01 CST 2003
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last visit: Sun Jan 30 15:23 CST 2011
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Bob,

Sounds like it is the clutch bearing...noise goes away when a/ engaged.


Thanks for the information!

Ian






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