Tip & How-To about 1993 Cadillac DeVille

STOP YOUR WINDOWS FROM FOGGING on RAINY DAYS using the A/C SYS

On a Cadillac, as long as the AUTOMATIC CLIMATE CONTROL is set to " AUTO ", the A/C compressor is in operation, and your windows will remain clear wet or humid weather conditions. On the " ECON " position, the compressor is NOT OPERATING. A manual system in any type of vehicle, will also accomplish the same thing. Even in the COLD weather , put the A/C SYSTEM into the ON position with the compressor operating. Temperature adjustment can be manuallly, made wth the temp dial or lever. You will be pleasantly surprised how well this will clear the fog quickly.

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I have a 1984 Cadillac Eldorado the air conditioner runs when I have my heat on does anyone know what the problem is


If you have automatic climate control and you mean the AC compressor, that is normal if the ambient temperature is above 40 degF. If there is an AC button on your climate control panel, you should be able to override it with that.

Apr 08, 2017 | 1984 Cadillac Eldorado

3 Answers

air conditioning blowing hot air


ok could be one of 3 things. 1 you may be out of freon. (proly spelt that wrong) 2. compresser could be bad. 3 the clutch on your compresser might not be engaging. when trucks running turn ac on and see if the front of your compresser spins or not. if it does clutch is good. but it could be that your compresser is still bad. either way i recomend you go for freon and start there. when they fill it they will tell you for sure wether or not your compresser is bad.

Apr 29, 2009 | 2004 Ford Explorer

3 Answers

just brought used 94 cadillac deville ac works great but no heat


This is the the Cadillac Climate Control operates. When you press AUTO, the system will automatically maitain DESIRED temp . The A/C compressor will operate ALL THE TIME on AUTO. Don't want the a/c compressor to operate, PRESS " ECON". Air delivery will NOT be DE-HUMIFIED, nor will it cool, only warm,. Hope this helps.

Apr 15, 2009 | 1994 Cadillac DeVille

1 Answer

heat setting wont run on auto,its stuck in the economy mode


Whenever there is a measured loss of freon, compressor switch will blow and will remain on "ECON" till repaired and the computer is cleared

Mar 14, 2009 | 1996 Cadillac DeVille

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