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Very STRANGE A/C Problem with 1997 Seville


ronspain

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Hi. This one's driving me batty. Often, the A/C will stop blowing cold in my 1997 Seville. The only way to get it functioning again is to rev the engine to 3,500 to 4,000 RPM. As soon as I rev it up, the A/C gets cold again.

Anyone ever heard of anyting like this?

Thanks,

Ron

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Hi. This one's driving me batty. Often, the A/C will stop blowing cold in my 1997 Seville. The only way to get it functioning again is to rev the engine to 3,500 to 4,000 RPM. As soon as I rev it up, the A/C gets cold again.

Anyone ever heard of anyting like this?

Thanks,

Ron

Check for codes, this can be so many things, a slipping clutch, low charge, etc. When was it evacuated and recharged last?

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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We had a similar problem with a member's car a few years ago. It turned out that the clutch gap had opened up due to wear. The next time the compressor won't come on, instead of revving the engine, whack the clutch with a rubber mallet - I bet it kicks in. You'll need to have the splash shield and tire off to be ready for it. An alternative would be to measure the clutch air gap with a feeler gage. I think it should be .020-.030". If it is more than .030", the clutch won't always pull in.

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

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