Question about 1998 Buick Regal

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I need to know how to find the low port to add refrigerant to the AC on my 1998 Buick regal.

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The high side always has a hose going to the condensor.

Posted on Oct 10, 2012

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Follow the AC lines and look for a plastic cap. There are 2, The big one is the high side and the smaller one is the low side. Unscrew cap to add freon.

Posted on Aug 20, 2010

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1 Answer

Where are high and low recharge ports for ac


The low which is the one you charge your A/C
with is located on the rear firewall about dead center 5approx 5 inches below the windshield. Make sure when charging you put your a/c on coldest setting and blower on high.
Hope this helps
God blessss

Jul 10, 2014 | 2000 Buick Regal

1 Answer

Picture of low side ac port on 2001 buick regal


You low pressure port is against the firewall just below the center of the cowl and is best accessed from the drivers side

Jun 30, 2012 | 2001 Buick Regal

1 Answer

Whining noise when I turn the AC on. Still cools. No noise when I turn just the blower on or heat. I have checked both belts and they are ok. I believe some part of the AC system needs to be replaced. I...


You can't not discharge freon into the air, against the law, you need a mechine to evacuate and vac the system, you can go to a garage and have them lok at the A/c system for around $50 includes 1 lb. freon, they will let you know what is wrong.

Jul 29, 2011 | 1998 Buick Regal

1 Answer

Where is the low ac suction side located on a 1992 buick regal


First find the A/C compressor, it is attached directly to the engine and has a pulley on it. When you turn on/off the A/C while the engine is running you should be able to locate it by listening for it to engage.

When you find it you need to trace the two metal pipes that come out of it. One pipe is the high pressure side and one is the low. You will know which one is the low side when you find the 'tee' with a plastic cap (both high and low have one).

The fitting that comes with the A/C recharge kit will only fit properly on the low pressure port. Sometimes, but not always the low pressure port has a blue cap.

Jun 19, 2011 | 1992 Buick Regal

1 Answer

Where do you add refrigerant on a buick century


In the low side ac port.Follow ac lines until you find a part with a black cap, there are 2. The big one is the high side and the smaller one is the low side.

Sep 06, 2010 | Buick Century Cars & Trucks

2 Answers

Where do i add r134 on the 99 buick regal , I see to nozzles under the hood one to the right boy wheel shock and the other back center closr to firewall


Closer to firewall is where your low side port should be. Your R134 filling hose quick connect adapter will ONLY fit on the proper "low side" connector port at that location because it is a different size than the high pressure port. You can't put it on the wrong port and get it to fit.

Jul 25, 2010 | 1999 Buick Regal

1 Answer

Where do i refill the ac - 1999 buick regal


yes thats the low side- if you have no freon in system you got a leak

Aug 29, 2009 | 1999 Buick Regal

1 Answer

Low ac port location on 2000 buick century


follow the ac hoses off the ac compressor toward the firewall will be a capped port to add your freon! hope this helps! craig

Aug 26, 2009 | 2000 Buick Century

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