Question about 1997 Cadillac DeVille

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A/c only works in auto a few seconds then switches to econ...compressor off light comes on...will not stay in auto.

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System may be low on freon need to repair leak

Posted on Aug 31, 2010

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Im working on a1988 Cadilac deville , replaced ac compressor , accumlator , orfus tube . i also vaccumed the system , reset computer . started car filled with 134a . worked fine till i drove for bout 1mi ....


Your have a low refrigerant level. Econ staying on and service ac will stay on too. Sounds like you didnt put enough r134a in the system. How much r134a did you add? Capacity is 38 ounces(thats
with R12), and a bit less than that for r134a.

Aug 10, 2011 | 1988 Cadillac Sedan DeVille

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I have a w208 clk 320 which i have now recharged rhe aircon system on but now both the auto lights and the econ light stay on red and now the fan doesnt operate although it did do even before when the econ...


YOU PROBABLY HAVE A HARD CODE STORED IN THE CONTROL UNIT.YOU MAY BE ABLE TO ERASE IT BY DISCONNECTING THE BATTERY FOR A FEW MINUTES.IF NOT YOU WILL HAVE TO HAVE VISIT A DEALERSHIP TO HAVE IT CHECKED.

Aug 06, 2011 | 2000 Mercedes-Benz CLK

1 Answer

My 96 Sedan DeVille Climate control system will not toggle between Econ and Auto Modes. It will only operate in the Econ Mode. The Auto Mode lights up when I push the button but immiediately switches...


This usually means the ac refridgerant is low. In Econ mode the ac compressor will not turn on, your car is staying in Econ to avoid damage to the compressor. If you are low on refrigerant it means you have a leak. Don't just buy a can and refil, have a professional shop check for leaks and fill the system with the proper oil and add refrigerant to the proper pressure.

Mar 07, 2011 | Cadillac DeVille Cars & Trucks

1 Answer

My issue is with my a/c on my 1992 Road Master i bought car from someone they said that they had just recharged a/c a couple weeks ago. I used a/c a few times with no issue. Then i noticed when i would...


take out the a/c and climate control fuse. THe climate control display will count down from 30 seconds two times. That will reset the climate control module. Worked for me :) problem solved

Jul 01, 2010 | 1992 Buick Roadmaster

1 Answer

The information center reads "very low freon" and "ac compressor off". this happens whenever you press the auto button on the climate control panel. On the climat control panel when you press the AUTO...


You'll need to have the A/C system serviced. It is low on freon so the compressor isn't coming on, and you won't have any A/C. Usually you'll just need some freon.

May 13, 2010 | 1995 Cadillac DeVille

1 Answer

1996 cadillac deville-auto switches to econ when turning on air


i have a 96 DeVille that did the same thing. It means your coolant tank is almost empty. It switches automaticlly to preserve based upon temp readings.

May 14, 2009 | 1996 Cadillac DeVille

1 Answer

On my mesage board it is asying a/c compressor off and very low on refrgarnt.my a/c has not been working all winter but heater has been working.


sounds like there might possibly be a refrigerant leak which would need to be detected, repaired, and recharged, Then clear codes from computer. Your heater will still operate although it wont be DEHUMIDIFIER air as when it is working properly nor will the system stay on AUTO. Will stay on ECON

Apr 07, 2009 | 1996 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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