Look at the tensioner while car under load. - Saab 9000 Bulletin Board - Saabnet.com
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Look at the tensioner while car under load.
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Posted by EricG (more from EricG) on Tue, 4 Feb 2003 21:09:25 Share Post by Email
In Reply to: Have to check on the compressor I think it's a sanden.., JB, Tue, 4 Feb 2003 12:47:20
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Need to see the AC cycle on and off a few times. A weak tensioner will bounce quite a bit when a load is put on it. You can buy the piston alone for around $75 from eEuroparts (site sponsor). It is an easy change.

Also look into the tensioner pulley, and idler pulley. They are a known weak area, and may account for your sound. A third thing to check is the harmonic balancer. It is the piece that drives all of this stuff off of the main shaft. The center is a couple of pieces of rubber which can lose the friction that keeps them turning together. When they slip, they can squeal. You can check by marking with a chalk line or spraying a dot of paint in the middle of the wheel. If the lines don't line up after a few starts, or longer running, you know you've got a problem.

Seems like you need to isolate further. A chunk of old garden hose used as a stethoscope might help you here. Be careful of all the moving parts.

posted by 159.116.25...

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