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Where are the low side and high side freon ports on a 92 buick regal with a 3.1 engine

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High side is higher than low ,two different connections, screw off caps follow from compressor ,hope to help you,robert b.

Posted on Jun 21, 2009

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Where do you put freon in on a 2002 Buick Century?


There are 2 capped ports the low and high sides. The freon gauge set will only fit on one of the two ports. The low side. Run the ac attach the freon hose and add as necessary

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Picture of low side ac port on 2001 buick regal


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Jun 30, 2012 | 2001 Buick Regal

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On 2002 buick regal ac problems. Tried a jumper wire from the pressure switch on high side( smaller ac line ) . no switch on low side by accumalator. vOLTAGE THROUGH WIRES ON HIGH SIDE. NO VOLTAGE GOING TO...


Does the system have a leak? If it does, then the computer might have set a low freon code that usually does not turn on the check engine light by itself. If this occurs, the code will have to be erased before the compressor will run. The computer does this in order to protect the compressor so that it cannot run without enough freon in the system. Once you correct the amount of freon in the system (if it needs it), reset the system and see if the compressor will run. Some parts stores have the ability to erase codes and will usually do it for free. I hope this solves your problem. It's definitely not good to have AC problems this time of year. Thanks for trying Fixya.com.

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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).

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2 Answers

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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Aug 20, 2010 | 1998 Buick Regal

2 Answers

Where is the low pressure port for adding freon


This one took me 30 mins to find, its at the back of the engine at the center of the firewall (below the windshield ) . This is where the a/c lines go into the car ( evaporator) its hard to see if your tall . Remove the cap and attach your gauge . Good luck.

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1 Answer

Where do i refill the ac - 1999 buick regal


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1 Answer

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Follow the biggest a/c line from start to finish.Usually the a/c port is located near the firewall.I have seen the port located under the passenger wheel well.There should be a decal that states the type freon on or near the fan shroud,core support or on the under side of the hood.It is most likely to be type r-12.You can purchase an r-134a conversion kit. If you are not a/c certified to use r-12,you do not need certification for r-134a.

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A/C service ports


low side is on dryer;not in line

Jun 18, 2008 | 1991 Buick Regal

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