Question about 1988 Cadillac Sedan DeVille

1 Answer

1988 Cadillac - A/C has plenty of freon and runs cool for a short period of time and then the dashboard panel indicates that it went to ''ECON'' and shuts the A/C off. You can disconnect the battery to reset the A/C and it runs cold again for a short period and then back to ''ECON''. Is there a wait to bypass this switch?

Posted by on

  • nesmithjm Jul 11, 2009

    Thanks for your help!



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Cadillac Master
  • 426 Answers

Depending on if you have a late in the year production model or early there are 2 wiring diagrams for this year and they had 2 A/C COMPRESSOR CONTROL CIRCUITS. It almost sounds like you are having an issue that is causing the body control module to shut it down.I can send you the wiring diagrams for both types that I have found. Please let me know if it helps or if I can help more but I am sure I am going in the right direction on this if compressor is good and you have proper freon charge.
Im pretty sure you cant bypass that switch there is another switch kicking this on and I would almost bet it is a high or low pressure switch it could be a relay but without testing these components its hard top pin point. These wiring diagrams would help

1988 Cadillac - A/C has plenty of freon and runs - 965283e.gifbf774ed.gif

Posted on Jul 11, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

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.

Jun 06, 2011 | 1993 Cadillac Eldorado

1 Answer

1993 Eldorado Coupe, 4.9L; 101,700 miles. The car sat for 3-4 years (original owner died) Driven less than 1000 miles since Aug. 2010. #1 Transmission is intermediately slipping. At a stop it may...

Drain and refill the transmission completely and see if that helps. As far as the heating and AC goes it can be scanned with a GM TECH 2 scanner to see what the fault is.

Mar 17, 2017 | 1993 Cadillac Eldorado

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

Air conditioner goes to econ and not auto and clutch does not engage

check to see if your system has freon it does that to prevent the unit u might noy have freon in the system

Aug 18, 2009 | 1991 Cadillac DeVille

1 Answer

Recently added a leak stop r-134a freon to my 1996 deville and after about 2 days the compressor wont turn on and it wont go to "auto" cool and stays on "econ" cool. after adding freon to car i noticed it...

If it's misting, this is a definite indication of an overfill. You should get a hose with pressure guage on it to avoid this. In the meantime, if a dangerous condition exists within your compressor. The optimal amount of pressure you're looking for is in the 40-45 psi range. Definitely needs attention or you will do damage to the system. Best of luck.

Jun 25, 2009 | 1996 Cadillac DeVille

1 Answer

The climate control system will not work in Auto mode but only in Econ mode in my 1989 cadillac fleetwood. I press Auto but it goes to Econ.

Your A/C system has lost its refrigerant, and will automatically go into "ECON" at that time. System will have to be leak tested , repaired, and recharged. Hope this helps.

Apr 09, 2009 | 1989 Cadillac Fleetwood

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

2 Answers

88 Cadillac Deville cooling fan runs continuously

you have a bad fan swtich in the block or the therostat housing its an easy fix

Jan 26, 2009 | 1988 Cadillac Sedan DeVille

1 Answer

1996 cadillac deville

You need to re-fill your Freon gas, he is finished real fast...

Jul 02, 2008 | 2005 Cadillac Deville

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

111 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts


Level 3 Expert

83940 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22441 Answers

Jeffrey Turcotte
Jeffrey Turcotte

Level 3 Expert

8841 Answers

Are you a Cadillac Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides