Question about 1995 Cadillac DeVille

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I have just had my complete A/C system replaced. It has never blown real cold, blows for a very short time, then reads A/C Compressor off, low refrigerrant. The place where the dusplay & buttons

I looked in the car manual & it clearly reads that if in econ mode, the A/C Compressor will be shut off. Looked up on computer that all codes must be reset& new codes entered when replacing A/C Compressor, also said could be switches on dash for choices.

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  • Contributor
  • 27 Answers

There should be a switch inside the car to choose whether you want econ mode on or off, Econ mode helps to save fuel and power.

Posted on Apr 18, 2014

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Posted on Jan 02, 2017

  • 14036 Answers

SOURCE: compressor working, cabin temp doesn't get to setting before system shuts off

sound like low side temperature sensor circuit open.check the compressor relay.

Posted on May 30, 2009

  • 1 Answer

SOURCE: !987 Cadillac Allante A/C problem

i put a 1990 allante trans into my 1988 allante, the used trans was working fine before i put it into my '88 allante. now it shifts very rough and has trouble going into park and the linkeage is very stiff.....someone told me there is a transmission control module that could be the problem or some kind of vacuum control module????any ideas???..........thanks, rodney

Posted on Jan 27, 2010

drsinister69
  • 2317 Answers

SOURCE: the information center reads

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.

Posted on May 13, 2010

  • 367 Answers

SOURCE: My 96 Sedan DeVille Climate

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.

Posted on Mar 07, 2011

  • 236 Answers

SOURCE: my ac was blowing fine

If the car was retro fitted with R134a this was a common problem. There was a low side pressure sensor that needs to be changed. R134a runs different pressures than the r12.. When you go down the road the condenser cools off the system and the pressure drops below the minimum pressure. You need to make sure that the system is fully charged, not just cold to the feel. Both pipes coming out of the firewall need to be the same temp. this makes sure that the evaporator is flooded.
I hope this helped. Re-post if you need more info. Have a nice day and good luck.

Posted on Jun 06, 2011

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1 Answer

No cold air coming out A/C


Could be a dozen different causes, from blown fuse to low refrigerant charge to toasted compressor. Not enough info from your post. What diagnostics have you done so far? read this post to learn how to test out the system.
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Jul 30, 2012 | Cars & Trucks

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My ac was blowing fine and cold until my ac compressor went out. i bought a used ac compressor wit new dryer/accumulater, and orfice tube. i had that for awhile and i replaced it again because the air...


If the car was retro fitted with R134a this was a common problem. There was a low side pressure sensor that needs to be changed. R134a runs different pressures than the r12.. When you go down the road the condenser cools off the system and the pressure drops below the minimum pressure. You need to make sure that the system is fully charged, not just cold to the feel. Both pipes coming out of the firewall need to be the same temp. this makes sure that the evaporator is flooded.
I hope this helped. Re-post if you need more info. Have a nice day and good luck.

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1 Answer

01 Sebring convertible, AC was low on refrigerant, and would stop blowing cold air and start blowing warm air. I added refrigerant, and it worked perfectly for about 20 days. Now it blows cold, then it...


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1 Answer

A\c does not blow cold and system is


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Mar 22, 2010 | 1999 Jeep Grand Cherokee

1 Answer

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It could be low in freon and won't allow the compressor to engage. Have you checked to see if your fuse is blown? It should be in the fuse panel of the car. Was the air acting up prior to not working anymore? like not blowing real cold air or anything?

Jul 29, 2009 | 2000 Dodge Intrepid

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My 2006 Colorado A/C runs , starts to blow cold then blows hot , then starts to blow cold then hot..........., finally after the engine gets real warm it just stays hot . I checke the freon level and it is...


Same problem on 2005 Colorado at work. A little research finds that this is a 'gas saving' system. It is designed to cycle often, resulting in less UP time on the compressor, which saves fuel.
HORRIBLE system!
We are going to refill the freon to exact specs and see how the gauges read.
Currently, when compressor is running, a nice cool temp is achieved. But while the compressor is off, the air gets a bit warm. it's 112 out today and this is unsatisfactory.
I found a forum which describes installing a resistor at a certain wire connection in the a/c module. This causes the clutch to engage for longer periods of time. apparently the only real fix at the moment.
I don't have that forum link with me.... so do a bit more research to find it.

Jul 27, 2009 | 2006 Chevrolet Colorado

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