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How to clear service ac light on 1988 cadillac deville

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I would first reset the low refrigerant safety feature by disconnecting the battery for 3 or so minutes.

Then, I would charge the system with 2 or 3 cans of R134a if equipped with the quick connect low side port while the car is running and the a/c is on the lowest temperature setting (60 deg. F).

Posted on Jul 02, 2010


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Recharged a/c do u have to clear ecm or bcm what is the codes

You do not have to clear either module. If the AC still doesn't work then there is still a problem like an AC compressor clutch or compressor cycling switch in the low pressure refrigerant side line..

Jul 12, 2012 | 1988 Cadillac Sedan DeVille

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My 1997 cadillac deville says service A/C compressor off what could be problem

We had this same problem after having AC serviced by our son So my husband called Midas just to ask questions, He was told to disconnect the battery for 10-15 min to clear codes on computer Happy to say it worked..

Oct 21, 2011 | 1997 Cadillac DeVille

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Im working on a1988 Cadilac deville , replaced ac compressor , accumlator , orfus tube . i also vaccumed the system , reset computer . started car filled with 134a . worked fine till i drove for bout 1mi ....

Your have a low refrigerant level. Econ staying on and service ac will stay on too. Sounds like you didnt put enough r134a in the system. How much r134a did you add? Capacity is 38 ounces(thats
with R12), and a bit less than that for r134a.

Aug 10, 2011 | 1988 Cadillac Sedan DeVille

1 Answer

I have a 1988 Cadillac Deville with a/c light on and of course no a/c.

check for freon leak and repair leak.recharge system.clear trouble.ok

Jan 27, 2011 | 1988 Cadillac Sedan DeVille

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How do I reset service engine light on 1999 cadillac deville

1996 on up OBD II systems require a scanner with the 'clear code' feature to reset the SES light.

Otherwise, one can cycle starting and stopping the engine 30 or 40 times to clear the SES light. This is not recommended, though, as it takes a long time.

Jun 03, 2010 | 1999 Cadillac DeVille

1 Answer

1988 sedan deville cadillac runs good until

Sounds like the battery is weak or the alternator isn't providing enough amps to keep the engine running and power the lights at the same time.

Dec 04, 2009 | 1988 Cadillac Sedan DeVille

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