Question about 1994 Cadillac DeVille

1 Answer

Air conditioning won't engage

My 94 Deville has set for an extended period of time. I recently started it to charge the battery and the air woudn't blow cold. I tried to give it a shot of freon thinking that was the problem. The system wouldn't accept the freon and the compressor never engaged. At this point, I reset the a/c by unhooking the negative battery cable for a minute. I did this more than once. I checked the low pressure switch by attempting to jump start the compressor...didn't work. I also used a test light to make sure there was juice going to the switch. It appears that the a/c clutch is locked up, because I can't spin it with my hand. I hear no noises whatsoever from the compressor when the engine is running, it simply won't engage. Any help would be greatly appreciated.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 14 Answers

You would be better off getting another compressor, used would be cheapeast, rebuilds are expensive

Posted on Aug 01, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

What causes the throttle body to chatter when key is activated?


Search Results

    Cadillac DeVille DTS - YouTube

    ? 2:09
    https://www.youtube.com/watch?v=dXLzsEm1-0Y
    Oct 20, 2010 - Uploaded by 1969Bossman429
    We dropped our 2000 Cadillac DeVille DTS off at the local Cadillac ... He got into the vehicle, turned the key and the vehicle was still revving at full throttle. ... He raised the hood, reached in to the throttle body area and cycled ...Missing: 1994 ‎chatter ‎activated

    1994 Cadillac Sedan DeVille [Archive] - Cadillac forums : Cadillac ...

    www.cadillacforums.com > ... > Cadillac Reviews
    Jan 17, 2005 - For my Review I will write about the 1994 Sedan Deville. ... A stifferbody this year made the Deville much quieter over the outgoing 1993 DeVille. ... First is a key when your looking at just about any Cadillac, push "off" and "warmer", this ...Have a helper hold the throttle plates wide open with the engine off.

    Cadillac DeVille Questions - Cadillac Deville 2001 won't ...

    www.cargurus.com > Questions > Cadillac > DeVille

    CarGurusJan 21, 2014 - Cadillac Deville 2001 won't start, engine won't turn over - My cadillac won't start. When i turn the key the engine wont turn over and when i do turn the. ... bad replace was told alt was intermenting so that's wat caused issue now car .... intake plenum (the tube between the Mass Air Flow and the throttle body).Missing: 1994 ‎chatter ‎activated

Jan 03, 2016 | 1994 Cadillac DeVille

1 Answer

Why won't my new and tested alternator charge the


need to check the wiring and connections for short or damage from alt to the battery any corrosion need to remove and clean or roplace

May 14, 2012 | 1994 Cadillac DeVille

1 Answer

I have a 1993 Chevy S-10 4.3L automatic. The heat won't shut off. It pours out regardless of the position of the climate controls. Coolant level and condition good. AC would work but. Thanks.


#46-12-03: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY) - (Apr 7, 1994) 999999995.gif REVISION: 04/14/94
THIS BULLETIN IS BEING REVISED TO CORRECT THE TRANSMISSION LISTED IN THE MODELS. ----------------------------------------------------------------------
SUBJECT: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY)
MODELS: 1994 CHEVROLET AND GMC TRUCK S/T PICKUP WITH 4.3 ENGINE (VIN Z - RPO LB4), 4L60E TRANSMISSION (M30) AND AIR CONDITIONER/MANUAL CONTROLS (C60); OR 4.3 ENGINE (VIN W - RPO L35) AND A/C (C60)
BUILT BEFORE THE FOLLOWING VIN BREAKPOINTS:
PLANT DIVISION VIN LINDEN GMC RK501034 SHREVEPORT GMC R8501199 SHREVEPORT CHEVROLET R8105893 LINDEN CHEVROLET RK103097
CONDITION:
SOME OWNERS MAY EXPERIENCE A CONDITION WHERE THE AIR CONDITIONER IS TURNED ON AND DELIVERS ONLY WARM AIR.
CAUSE:
THE AIR CONDITIONER COMPRESSOR MAY DELAY LONGER THAN THE "ORIGINAL DESIGN" INTENDED 12 SECONDS, OR MAY NOT ENGAGE, DUE TO THE POSSIBLE MALFUNCTION OF THE COMPRESSOR DELAY RELAY.
CORRECTION:
TRUCKS BUILT BEFORE THE VIN BREAKPOINTS LISTED ABOVE MAY NEED A NEW AIR CONDITIONER DELAY RELAY. REPLACE ONLY WITH 15990540 AIR CONDITIONER COMPRESSOR DELAY RELAY. SPECIFIED PROCEDURE IN SERVICE MANUAL NATP 9429, PAGE 1B-59. TEST AIR CONDITIONER OPERATION FOR DELIVERY OF COOL AIR.
NOTE:TO TEST FOR PROPER OPERATION, PUT THE A/C CONTROL ON THE "OFF" POSITION, START THE ENGINE, THEN PLACE THE A/C CONTROL IN THE "ON" POSITION. THIS SEQUENCE WILL PROVIDE IMMEDIATE ENGAGEMENT OF THE AIR CONDITIONER COMPRESSOR. WHEN THE ENGINE IS STARTED WITH THE A/C CONTROL ALREADY "ON", THERE WILL BE A NORMAL 15.0 SECOND DELAY FOR THE AIR CONDITIONER TO ENGAGE.
SERVICE PARTS INFORMATION:
P/N DESCRIPTION QTY
15990540 A/C COMPRESSOR DELAY RELAY 1
PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

Jul 29, 2011 | 1994 Chevrolet S-10 Blazer

1 Answer

Cannot charge system as the compressor clutch does not ingage ...it was working fine then I thought it must have a leak when it started blowing warm air instead of cold....tried to charge it....to no...


Most likely the switch that is causing your trouble is located on the comp. behind the clutch assembly, In most instences the clutch Assembly will need replaced. The switch engages and disengages the clutch. Most of the time these can not be bought by them thelves.

Jun 23, 2011 | 1996 Cadillac DeVille

1 Answer

I have a 94 cadillac deville. Recently my car wouldnt start. I figured it was the battery. I replaced this and the car did start. However the car will not turn over again. I then figured my alternator was...


The "clicking" noise may be the solenoid on top of the starter mot engaging. Are all connections to battery and solenoid tight? Hope this helps. Let me know. Thanks.

Dec 27, 2010 | 1994 Cadillac DeVille

1 Answer

I have a 1996 Cadillac Sedan DeVille. This spring...


If the a/c does not engage as a result of the electronic control system in your 1996 Cadillac, the climate control system may need to be replaced.

However, if the problem is being caused by low charge of R134a in the system, have the system charged before changing that electronic part.

I have never seen a Cadillac Climate Control System do this, which leads me to believe that it may be more electronic than refrigerant pressure related.

If the refrigerant pressure was low in the system, the climate control system should still stay on 'auto' mode, I think, and simply blow warm air.

May 19, 2010 | 1996 Cadillac DeVille

1 Answer

Air conditioning won't engage


To reset your AC compressor, you need to remove power for at least 15 minutes. After you reconnect, the compressor should turn on. If it does, immediately turn to high and try to add refrigerant. Best of luck.
Greg

Jun 01, 2009 | 1994 Cadillac DeVille

2 Answers

CAr idles fast - sucks up gas and will shut off periodically.


If it has a high idle I would say that the iac (idle air control) valve is bad and needs replaced. It should be located on the throttle body.

Mar 23, 2009 | 1994 Cadillac DeVille

1 Answer

1995 Cadillac Deville


In my 1990 Cadillac Deville there is a sticker that says that one can reset the computer that controls the compressor by disconnecting the battery for a few minutes and reconnecting.

Did you disconnect the battery to reset the a/c system?

The symptoms you are describing lead me to believe that there is a safety feature that prevents the compressor from engaging when the compressor has been run for any length of time without at least .5 lbs. of freon in the system.

You said that you had to run a hot wire to charge it up with freon. But, if you ran it without freon, it may have automatically invoked the 'safety' feature.

I have seen this happen on my 1990 cadillac. I haven't had any problems on my 1997 Cadillac Limousine, because I never had a low charge on that car.

Aug 08, 2008 | 1994 Cadillac DeVille

Not finding what you are looking for?
1994 Cadillac DeVille Logo

246 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cadillac Experts

yadayada
yadayada

Level 3 Expert

60792 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6811 Answers

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

Answer questions

Manuals & User Guides

Loading...