Question about 1999 Cadillac DeVille

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Ac not working

My digital reader says low refridge ac off but system is full

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  • Anonymous Mar 14, 2014

    low refridge/ac off

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The sensor that detects low freon went bad and your compresor is not turning on try replacing that sendor

Posted on Jun 22, 2009

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1 Answer

How to program the ac


It sounds like you have either a low pressure cutoff switch that is faulty or connection at the switch/wiring. The computer will only see the fault while it is operating and it will only set the code after 2 consective faults. Make sure you have the system checked by a professional to make sure pressures are correct in the system first.

Sep 25, 2014 | 1999 Cadillac DeVille

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Ac donot work


The very first thing that must be done is to have the system checked for a leak and the resulting loss of refrigerant. You will need a set of AC system pressure gauges, the low side should be 28-32 PSI if the system is full. Sears carries the gauges for about $50.00

Jan 17, 2013 | Cars & Trucks

1 Answer

My ac went out on my 98 cadi deville a few month ago. It just tells us low refridge. we tried to put some more in and the gage to fill it up says it is still full. but since then my econ/vent; heater; rear...


on those caddys you disconnect the battery and wait a few seconds and reconnect and it will reset ac system. when it goes into service mode the system just shuts down. the battery procedure is how to reset. when the ac compressor is not engaging you will not get an accurate reading on your gauges. it might be low but the compressor must be engaged for the system to take more freon.

Nov 18, 2010 | 1998 Cadillac DeVille

1 Answer

How do I reset the ac compressor in my 07 volk jetta 2.5


There is no reset, check the fuses, if the compressor is not working ,it may be due to low freon in the system, there are switches that shut compressor down when freon is low, this avoids compressor damage. the first thing to do is check to make sure the system has a full charge, if its low then recharge to correct amount and add dye this is dangerous system under high preasure, let a ac tech check the system for you. hope this helps.

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I have a 2000 pontiac sunfire, a/c blows warm are...i have replaced refrigirant twice, but cools for one day and back to warm, and gauge on refridgent will read low each time i filled it...whats my...


Put some ac dye in the system.Which you can buy in stop leak cans from your local parts store.You have a pretty big leak from what it sounds like.The dye will show up were the leak is.

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1 Answer

1997 pyzar 1.5 ac full of gas but ac wont work


CHECK AC COMPRESSOR CLUTCH SHOULD BE ENGAGED OR RUNNING WITH AC SWITCH ON POSITION.IF NOT CHECK AC COMPRESSOR CLUTCH FUSE AND RELAY.IF BOTH GOOD AND POWER IS GOING TO AC CLUTCH.YOUR CLUTCH IS OPEN.IF ALL LOOKS GOOD YOUR AC LOW PRESSURE SWITCH IS BAD.COMPRESSOR SEIZED OR YOU HAVE TOO MUCH MOISTURE IN AC SYSTEM.

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1 Answer

Ac unit only works sometimes in 98 accord


Check the amount of refrigerant in the system. If thats ok, you might have a bad pressure switch. If the system is full. Find the low and high pressure switch. Run the ac with just the high press swith unplugged. see if the problem occurs. Do the same for the low side. More than likely if your system is full on refirgerant, and trust me I would check that first. Could save you alot of time. Then it could be a pressure swith, and a simple test like that can tell you. But in order for that to wirk you maust have the ac system fully charged. NOT OVER FILLED WITH SOME ADVANCE AUTO PARTS ****. Go to a tech and have them do this correctly.

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1 Answer

1999 Cadillac Coup DeVille


Have your a/c system charged and tested for leaks.

Jun 21, 2009 | 1999 Cadillac DeVille

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