Question about 1999 Cadillac Eldorado

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How do i engage the compressor to add coolant to my ac of my 99 eldorado

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You can jump the solonoid ... or jumper the clutch dirrectly.

Posted on Sep 28, 2010


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1 Answer

Ac low pressure switch

coolant has nothing to do with the ac system
coolant goes in a radiator
gas goes in the ac system and should be only installed by an accredited ac specialist shop using the correct equipment
If you have to add gas then there is a leak in the system
second point , when you turn on the ac compressor , and start to add gas ,when the gas pressure is sufficient then the ac compressor will switch on
Best to have the specialist do the job for you

Jun 13, 2016 | 1996 Chevrolet Corsica

1 Answer

Air Conditioner Compressor Clutch Problem

If you did not use a vacuum pump from a dry system them the system will not work.

Jul 04, 2017 | 2002 Chrysler PT Cruiser

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Hi, the way to get the compressor to come on is to short the connector to the pressure sensor on the return line. The sensor is along the same line you were trying to charge on. Just remove the connector and use a large paper clip to connect the terminals inside the connector. Please let me know if you have more questions, and thanks for using FixYa.

Jan 01, 2011 | 2001 Cadillac Eldorado

1 Answer

After i put the ac on my bmw x5 2003 get over heat and smell burn

pls. check your ac compressor magnetic clutch attached in front of ur compressor if its working/ ac clutch engage when u turn the ac switch on and disengage when u turn the ac switch off/ it normally makes a clacking sound when it engage with the rotation of ur compressor/ if its not engaging it means ur magnetic clutch is stuck up giving excessive load to ur engine thats why it overheats/ it smell burnt because its magnetic coil is fried/ or check cooling system of ur car might be that coolant is empty/ fan is not working/ radiator is clogged or thermostatic valve is stuck blocking coolant flow....

Apr 09, 2010 | 2003 BMW 5 Series

1 Answer

'99 cadillac eldorado, Northstar engine w/AC problem

Have you unhooked the battery since you put the freon in? If not, do it.

Jul 04, 2009 | 1999 Cadillac Eldorado

1 Answer

Air conditioner is not blowing cool air, but fan still blows

check the compressor with the ac running and make sure the compressor is kicking in and out in not the compressor might be bad or te clutch on te front of te compressor, sometimes u can get to much freon in them to i did it ounce

May 30, 2009 | 1998 Cadillac Eldorado

1 Answer

AC clutch engages and disengages constantly

the system is low on charge, as far as the attempt to add refrigerant u did something wrong, no sure what, the rapid cycling of the compressor is only caused by a low charge 99% of the time. Have u hooked up a set of gauges to check pressures?

May 20, 2009 | 1998 Ford Explorer

1 Answer

Air conditioner not cooling.....


First, I'd try checking your local Library for an AC repair manual. An Ac system has a number of different parts that all work together to cool.

That said, there are some things you can check that are easy.
First, Check the controls. Is the AC on, the blower on, and the temperature selector set on cold? Really check, because this is what is wrong about 10% of the time.

Next, with the car off, find the AC compressor. Is the belt still on it? Have someone start the car and turn the AC on while you watch the compressor. The outer part should turn, and when they turn the AC on, there should be a click, and the inner part will start to turn as the clutch engages.

Next, Look at the fans. If your car has an electric fan, it should come on when the AC has been on for while. If your car has a manual fan, then it might be the fan clutch, but there isn't an easy way to check this.

If it isn't one of the above, then you are probably out of DIY territory. Because of this car's age it probably has R-12, an older type of refrigerant that is no longer manufactured for environmental reasons. The $1100 for the compressor replacement seems high, but that should include evacuating the system and recovering the refrigerant, replacing the compressor, receiver/dryer, and expansion valve, flushing the system of the old refrigerant and oil, replacing the oil some that is r-134 compatible, and installing the updated fittings and o-rings for R-134. You can see how that adds up in terms of time and Parts.

Good luck!


Jun 26, 2008 | 1989 Cadillac Eldorado

1 Answer

1998 cadillac eldorado air cond compressor

get a can of your vehicles coolant and recharge the a/c with a can or 2 of your specified coolant theres really not much to do to putting a can on screw on to nip turn vehicle on and let the can do its job make sure to match your coolant specifacations
you can buy the add on cans almost any car part store

Jun 12, 2008 | 1998 Cadillac Eldorado

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