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NOISE FROM AIR CONDITIONER


Larry

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It sounds like a bucket of bolts. Could it be my compressor or clutch. Sprayed wd 40 it stops it for a while, but loud and ugly sounding. Will stop once in a while. Any thoughts, Thanks,Larry By the way it is a 96 deville. Air conditioner not engaged.

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It sounds like a bucket of bolts. Could it be my compressor or clutch. Sprayed wd 40 it stops it for a while, but loud and ugly sounding. Will stop once in a while. Any thoughts, Thanks,Larry By the way it is a 96 deville. Air conditioner not engaged.

Its your ac compressor, bypass it with a shorter belt before it fails...happened to me once, i had this noise that i couldnt find,thought it was the belt so i sprayed belt spray on it and it helped just a bit! One day the engine wouldnt crank over due to the axle in the compressor that had bent because of the failed clutch! Had to get a towtruck then! Now i removed the whole ac system in the car and put a bypass pulley where the compressor were!

Roger Martinsen

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I agree, if you do a search here, you can find the belt part number, it bypasses the compressor. Mine sounded terrible, it gets so bad that it will overheat and shortout the clutch coil and blow the fuse

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I was thinking hub bearing, that is what went on mine

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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I would say clutch/pulley bearings if the comp. is not engaged, I changed mine about 5yrs ago it made one hell of a nasty grinding noise and you could barely turn the pulley by hand. My labour+ $60 clutch $40new belt.

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It definitely sounds like a pulley bearing. This is a very straightforward fix - you do not need to mess with the refrigerant charge. You need a clutch pulley puller/installer which is available from most of the chain parts stores as a rent/loan-a-tool program, and a new bearing.

The bearing is staked to the pulley - you will need to grind off the stakes and press out the bearing while supporting the pulley. Not a big deal. The new bearing gets pressed into the pulley and then you need to use a punch to stake the bearing in place at three points along the outer race of the bearing.

The pulley is available with the bearing (at a higher cost) if you do not want to R&R just the bearing. You can find the bearing at a local bearing supply house such as Applied for $8.00 or less.

The installation requires the clutch pulley installer tool and you need to set the clutch air gap to .020-.030".

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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I was thinking hub bearing, that is what went on mine

In hind sight, I guess I should have said hub vs clutch.

Hub bearing, clutch bearing, pulley bearing - all one in the same.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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Larry,

The pully is a press fir to the shaft. There may or may not be a nut on the end of the shaft that needs to be removed. You need the removal and installation tool - do not attempt the job without the tool. Make sure you mark the key so that it is installed on the shaft in the same orientation.

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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Any idea what size belt if I want to bypass the compressor for now. It is smelling and getting hot, I need a fast fix until I can work on it. thanks, LARRY

Any good parts store should have a belt (or be able to order one) that is meant specifically for your car, and just for this reason. I know my local Advance Auto carries the one for mine. If a parts store can't get one then they may at least be able to tell you the size.

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I provided an answer to this yesterday in this thread

http://caddyinfo.ipbhost.com/index.php?showtopic=27969

Please keep all RELATED topics together in the same thread. Otherwise we havea droppings all over the place

I will merge these two threads later

Pre-1995 - DTC codes OBD1  >>

1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm

How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/

Cadillac History & Specifications Year by Year  http://www.motorera.com/cadillac/index.htm

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