Question about 1999 Cadillac DeVille

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Low-refrig ac off message is on

The "low-refrig a/c off" message is on. added refrigerent, still on. blower not working. disconnected the battery to reset computer. still not working. replaced blower. still not working. please help, w/ recommendations

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Does the AC system show normal pressure readings and maintains at least 28-32 PSI on the low side charging port?

Posted on Mar 21, 2014

  • Nick Valentine Jun 17, 2014

    Needs vacuum check, possible leak.

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1 Answer

My 99 cad deville "low-refrig a/c off" message is on. added refrigerent, still not working. comp clutch is engaging, the blower is not working. please help possible problem/solution before i give up a


there are too levels for refrigerant that affect the ac compressor . one is too low which you see and the other is too much. both control pressure switches tat work the ac clutch. IT is best to have a refrigerator /air conditioner mechanic add the gas as they will check out the system for leaks which you have

Mar 21, 2014 | 1998 Cadillac DeVille

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2000 jeep cherokee


i think the refrigerant u added is not of spreme quality.

i think that may be the fault.

Jun 16, 2008 | 2000 Jeep Cherokee

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Why is my car giving an incorrect error?


Check or replace the pressure switch on the ac dryer. It is shutting off and not allowing the compressor to run. This based on the system having the right amount of R134A.

Apr 25, 2017 | 2001 Cadillac Eldorado

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Hi! My 1999 Cadillac Deville for about 2 weeks started messaging low refrig-ac-off. Check engine light on!.


When you change your oil is up to you,you set the
months & miles you go. Any car with a reminder
for oil is just a gadget

You were told that your low on a/c refrigerant by the
message

Now the check light related or not has to be addressed,
by checking for codes & diagnosing the effected system

Your a/c system needs repair,not added to, only to leak out
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Nov 14, 2012 | 1999 Cadillac DeVille

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How to install a 1999 yukon ac compressor


Hi.

Follow below...

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REMOVAL PROCEDURE

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

1. Disconnect the negative battery cable.
2. Recover the refrigerant.
3. Remove the drive belt.
4. Disconnect the refrigerant hose assembly from the compressor.
5. Cap or plug all of the open connections.
6. Disconnect the electrical connectors, as necessary.
7. Remove the bolts.
8. Remove the compressor from the bracket.
9. Drain the compressor oil.
10. Measure the compressor oil. Refer to Adding Oil .

INSTALLATION PROCEDURE

1. Fill the compressor with oil. Refer to Adding Oil .
2. Install the compressor to the bracket.

NOTE : Refer to Fastener Notice in Cautions and Notices.

3. Install the compressor mounting bolts.

Tighten
Tighten the bolts to 50 N.m (37 lb ft) .

4. Connect the electrical connectors, as necessary.
5. Install the refrigerant hose assembly to the compressor.
6. Install the drive belt.
7. Connect the negative battery cable.
8. Charge the system. Refer to Refrigerant Recovery and Recycling, Adding Oil, Evacuating and Recharging Procedures .
9. Inspect the system for leaks.

I hope this helps.

Thanks...

Dec 03, 2010 | 1999 GMC Yukon

3 Answers

1998 Cadillac Deville low refrigerant a/c


I have a 1999 Cadillic Deville. The low Frefrigerant indicater come on after about 15 minutes of disconnecting the battery power. Each Time I reset the power the air conditioner comes back on for a while then goes out. I have taken it into the local auto repair place and they find no problem with the unit.
Could this be a intermittent connection to the computer. They have replaced both sencors and the problem persists. Where is the computer located on the car that handles this AC sensor message?

Jun 18, 2010 | 1998 Cadillac DeVille

1 Answer

My cadillac concours deville say low refrigerant ac compressor off and tried to put some in is there a certain way to do it


Yes, if it is like my 1990 cadillac deville, you must first disconnect the battery for 3 or so minutes and reconnect it to clear the error message and to reset the a/c system so it will turn on when R134a is added under pressure.

Cadillac did that in 1990 so the compressor would not run without refrigerant in the system. It's a safety feature designed to save a compressor if there is a leak in the system.

If you try to add refrigerant without resetting the a/c system, then the compressor will not engage.
.

Jun 06, 2010 | 1995 Cadillac DeVille

1 Answer

2001 cadillac deville ac compressor not coming on


Try adding some refrigerant as it won't come on as a safety feature if it is too low in pressure.

Otherwise, it may be an electrical break in the clutch wires, or a bad fuse.

If it is like my 1990 Cadillac Deville, the a/c compressor will not come on at all until the battery is disconnected for several minutes and reconnected, and then charged with at least .5 lbs. of refrigerant.

May 26, 2010 | 1996 Cadillac DeVille

2 Answers

Which port is used to add refrigerant to AC on1999 Blazer


The low pressure port is on the drier (the silver cylinder by the blower motor on the passenger side of the vehicle). screw off the black cap and hook your adapter on to it.

Aug 08, 2009 | 1999 Chevrolet Blazer

2 Answers

1999 caddy eldorado


Had this happen to my 95, had to disconnect the battery for 5 min to reset the compressor. Then after re-connecting, turn a/c on high to refill with refrigerant. Best of luck with your problem.

May 03, 2009 | 1999 Cadillac Eldorado

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