Question about 1989 Cadillac Sedan DeVille

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Where is the low side line ac on my 1989 cadillac please... lonnperr@gmail.com

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Please see my tip at http://www.fixya.com/cars/r5833579-auto_truck_c_recharge and let me know if you have questions

Posted on Sep 14, 2010

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Posted on Jan 02, 2017

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On a 1959 Cadillac Eldorado where is the low side ac port??


the low side port is on the suction line. the suction line is the larger of the two lines running to the firewall.

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93 Allante AC Compressor won't come on to recharge system


On most models you would need to jumper the low pressure switch while you are recharging the system. There should be a low pressure switch on the low side line and a high pressure switch on the high side or on the compressor.

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yes you can add freon.there is two aluminum lines one is a high side the other is a low side unscrew the low side cap (they have symbols on them ) grey or black caps ...the freon can have instructions in the back of can turn ac on and fill system good luck

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My 1989 Cadillac Sedan Deville has a steering fluid leak. Have to fill it up every few days. What do you think the problem is?


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Feb 17, 2011 | 1989 Cadillac Sedan DeVille

1 Answer

Which is the high an the low side of the ac unit in a 1993 cadallic deville


HIGH PRESSURE SIDE IS REFRIGERANT LINE WITH RED CAP GOING INTO CONDENSOR AND EXPANSION VALVE OR ORIFICE TUBE.LOW PRESSURE LINE HAS A BLUE CAP ON IT.FOLLOW EVAPORATOR LINE CLOSE TO ACCUMULATOR.

Jan 28, 2011 | 1993 Cadillac DeVille

1 Answer

1989 Cadillac heat flow system is not flowing properly. Ive got heat low, med, and high the motor is kicking on but its not blowing out at the right strength. What would be the issue? Is there a cabin...


Check to see if the air is coming out of the defrost vents up on top of your dash...by the windshield. If this is the case...you have a vacuum line that has either come loose under the dash....or....the vacuum controller located behind the AC/Heat controller is not functioning properly. ( Tip....Vacuum is what actuates the "doors" inside your AC/Heat plenum...directing airflow straight out front vents...up to the defrost....and down to the heat.....

Theroadisalover

Try to post back and let me know If I helped you solve your problem. It will help me with my rating....! Thanks

Jan 01, 2011 | 1989 Cadillac Sedan DeVille

2 Answers

Where is the low pressure line service outlet located 96 lumina apv


They can hide these pretty good,you may not like this ,but here goes.Find the ac compressor ,and follow the large ac line/hose that comes off of the ac compressor.It will take you to the low side service port.It will be the small port.Most of the time it is located on the dryer,or near it,but not always,but it will be on the large line of the ac system.If I can help ,let me know.>>.roniecon@gmail.com

Sep 23, 2009 | 1996 Chevrolet Lumina Mini

1 Answer

Where is the low side line to add refrigerant to a 1998 grand cherokee


Hi,Let`s see if we can help.Look for the ac compressor,and follow the large ac line/hose until you come to the small ac service port,this is it.The high side line/hose is the smaller line/hose with the large ac port.You can`t hook up to it any way with a single ac charge hose ,so there you go.If i can help...roniecon@gmail.com

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