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Date: Thu, 28 Sep 2000 08:34:07 -0400
From: Mike F <"mikef2316()"nopsamanada.cant>
Subject: Re: Solve this Master Tech


Ask The MasterTech wrote: > > Hi Johannes, > One of two things. Either the A/C system is overfilled making the compressor > overwork or the compressor is beginning to fail inside. Compressor failures > on Saab (as with many other cars) are a very common failure because most > people tend to leave them on all the time inadvertently.Hopefully this will > help. TW <johsnopsamsafish.com> wrote in message > news:39D2626D.EBB8FEC2nopsamsafish.com... > > On my Saab 9000 CSE 1993 75000 miles, the A/C pump wheel emits a noise > > (A/C off) which one normally would associate with lack of lubrication. > > The noise is not audible inside the car, but it worries me if the unit > > is about to fail. I asked the Saab dealer about it, he said there are > > no lubrication points or requirements for this unit. A replacement pump > > would cost around £500 ! This is a lot of money for a bit of cold air. > > What should I do now ? > > > > Johannes Interesting that the overfilling would make any noise with the A/C off. If there is noise at the front of any A/C compressor with the A/C off, it's caused by the bearing that allows the A/C drive pulley to freewheel without turning the compressor. The worst part of this is that part is normally a standard ball bearing that costs no more than $10 if you buy it separately. Sorry I know nothing of Saabs, but you may be able to remove the pulley and lubricate this bearing. This may make it last for 2 more hours or forever, depending on how lucky you are. (I did this on a Volvo once, about 8 years ago. My brother still has the car, A/C works fine.) -- Mike F. Thornhill (near Toronto), Ont. Change cant to ca and remove parentheses to email me directly.

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