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08-05-07, 12:23 PM
|  | Cadillac Owners Connoisseur Cadillac(s): 01 Eldo ETC, 02 Deville  | | Join Date: May 2004 Location: Salem, NJ Age: 56 | | | Odd 'Grinding' Noise when A/C off
There is a slight, but noticeable, grinding noise coming from the depths of the front (pass side) of the engine. It disappears completely when the A/C is switched ON, but reappears when the A/C is OFF. Thusly, I suspect something in the AC system (brilliant, ain't I??? LOL)
Pulley bearings? Compressor innards? Full Moon?
It sounds like the Eldo might have to make the first trip to a dealer in 28 months...since I still have the GMPP warranty in effect, perhaps now is a good time, eh?
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08-05-07, 12:31 PM
|  | Zeeee-yaaaa Cadillac(s): 07 STS 1SG, 03 STS, 74 Eldo, 98 Z28, PAST: 97 ETC | | Join Date: Oct 2005 Location: Cheswick, PA Age: 23 | | | Re: Odd 'Grinding' Noise when A/C off
sounds like the compressor
you CAN try reoiling it (adding a/c oil) but im guessing its already toast
not a cheap fix if you stick with GM parts, i went to advanced and did it myself on my 97 it wasnt hard, cost me 400 i believe for everything including freon |
08-05-07, 12:31 PM
| | Cadillac Owners Connoisseur Cadillac(s): Sedan de Ville, CTS | | Join Date: Mar 2007 Location: San Antonio, Tx | | | Re: Odd 'Grinding' Noise when A/C off
A/C clutch bearing? |
08-05-07, 12:35 PM
| | Cadillac Owners Connoisseur Cadillac(s): 01 Eldo ETC, 02 Deville | | Join Date: May 2004 Location: Salem, NJ Age: 56 | | | Re: Odd 'Grinding' Noise when A/C off
Quote:
Originally Posted by z06bigbird  A/C clutch bearing? | That's what I'm thinking...should we start a pool?... lol |
08-05-07, 04:30 PM
| | Cadillac Owners Member Cadillac(s): White Diamond '03 DHS | | Join Date: Jun 2004 Location: Woodstock Ill. Age: 61 | | | Re: Odd 'Grinding' Noise when A/C off
Clutch bearing is my vote. |
08-05-07, 05:29 PM
|  | If it won't run, chrome it..... Cadillac(s): 2002 Cadillac F55 STS/53000mi., 2004 Ford F150 Super cab 4x4 | | Join Date: Feb 2006 Location: Maryland upper Eastern Shore Age: 69 | | | Re: Odd 'Grinding' Noise when A/C off
 Clutch idler bearing ........Running free, it rattles, clutch engaged, the compressor shaft bearing takes the (most of) load. How many miles? Long term fix is whole unit..........$$$ |
08-05-07, 08:11 PM
| | Zeeee-yaaaa Cadillac(s): 07 STS 1SG, 03 STS, 74 Eldo, 98 Z28, PAST: 97 ETC | | Join Date: Oct 2005 Location: Cheswick, PA Age: 23 | | | Re: Odd 'Grinding' Noise when A/C off
like me said
compressor bro lol |
08-05-07, 08:20 PM
| | Custom Wheel Fanatic Cadillac(s): N/A | | Join Date: Apr 2006 Location: Michigan | | | Re: Odd 'Grinding' Noise when A/C off
A/C clutch plate. Just had a mitsubishi eclipse at my shop with that same issue. The only proper fix is to replace the compressor and clutch assembly. |
08-05-07, 09:30 PM
| | Cadillac Owners Connoisseur Cadillac(s): 01 Eldo ETC, 02 Deville | | Join Date: May 2004 Location: Salem, NJ Age: 56 | | | Re: Odd 'Grinding' Noise when A/C off
Quote:
Originally Posted by submariner409 Clutch idler bearing ........Running free, it rattles, clutch engaged, the compressor shaft bearing takes the (most of) load. How many miles? Long term fix is whole unit..........$$$ | The 36MO/36K mile GMPP B-to-B warranty I got when I bought the Eldo in April of 05 still has about 8K miles to go on it..so it shouldn't cost more than the $100 deductible.
Will stay in touch. I may have my wife take the car to General Sales in West Chester one day this week... | | Cadillac Discussion Tools | | | 
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