[s-cars] Re: Clicking noise when a/c compressor is on

[William Noland]

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[ Picked text/plain from multipart/alternative ]
The a/c compressor in the UrS cars has a wobble plate which, in effect,
varies the output of the compressor to meet your cooling needs -- the
angle of the plate changes as it rotates to change the  virtual volume
of the unit. This does away with that annoying on-off cycling found in
lesser cars. This bit of hi tech does not necessarily insure a long life
for the unit. On the contrary, wobbling parts tend to lead short, wobbly
lives. Rebuilt units are available.

Bill Noland

>Yes, me. Same exact symptoms. Bad compressor. And don't let some idiot tell
>you it is the serpintine belt tensioner, cause it couldn't possibly be the
>compressor, like I did!!!  If the sound sounds like it is coming from the
>compressor and it goes away when you turn the A/C off, it is the compressor.
>I've been on this list about three years and you are the only one I have
>ever heard have this same problem.
>
>Gary Martin
>CT-USA
>94 UrS4
>91 200 TQA
>
>----- Original Message -----
>From: "Scott Munger" <mungerts at uneedspeed.net>
>To: "'S-car list'" <s-car-list at audifans.com>
>Sent: Thursday, October 24, 2002 10:24 AM
>Subject: [s-cars] Clicking noise when a/c compressor is on
>
>
>>All the gremlins seem to come out when it's cold...
>>
>>I heard a clicking noise coming from the hood ('93 S4) that increased in
>>frequency with the RPM's.  It almost sounded like noisy valves; which
>>concerned me.  However, I noticed the a/c compressor was on and when I
>>
>turn
>
>>it off, the sound stops (which is mildly relieving).
>>
>>Question, has anyone had an a/c compressor go bad?  Did you notice any
>>
>such
>
>>noise?
>>

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