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Where to add r134a, can't find low pressure service port

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The low pressure port in right beside the A/C Cycling switch near the accumulator.. Hope this helps

Posted on Jun 01, 2010

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What kind of ac coolant does it have 134a or r 12 and where is the low pressure port for the ac located


Depends on the year. Cars in the early 90's used R12. Anything later uses R134a. The size of the charge ports will define the R134a port. An adapter is needed to fit on the charging hose. R12 requires no such adapter. Ther charging label under the hood will tell you what refrigerant is needed too. Since you failed to give enough information on what make and model car you have, a general answer for the location of the low pressure port will be given. On the compressor, the larger diameter hose connection is the low side. Connect there, or look for the drier/accumulator (Large diameter silver container near the firewall). Connect there. You will need to access the AC information label under the hood to determine how much freon to add to the system.

Mar 12, 2016 | AC Cars & Trucks

1 Answer

How and where to add freon to a1995 sedan deville


Verify ambient temperature is above 65 degrees F.

1. Safety> - safety glasses, long sleeves and gloves, (exposure to refrigerant can cause frostbite).

2. Attach hoses to manifold> assembly, (hi, lo, and fill).

3. Remove caps from service ports, (Low press. Larger tube from evaporator to accumulator - passenger side over fender well; High Pressure - smaller tube from evaporator along firewall towards driver's side). Verify service> ports are clean.

4. Attach low press. and high press hoses to proper service ports.

5. Start car>, reset low refrig code, and turn ac on high and fan on high.

6. Read gauges and compare with chart provided with gauge set.

7. If low and high press readings are both low, then system needs recharge.

8. To recharge, attach fill hose to can of R134a and slowly open low press valve>, (NOT HIGH PRESS VALVE), until low press side reads 40 psi.

9. When flow stops and pressures stabilize close valves> and disconnect manifold from service ports and refrigerant can. Replace service port caps.

Aug 19, 2015 | 1995 Cadillac DeVille

2 Answers

Where do i find the low side on ac unit


Check under the air filter box, just below it, will be the low side port.

Sep 02, 2010 | 1999 Chevrolet Lumina

2 Answers

Low side on ranger for the port on the ac


hmm ..if you are looking for the low side air conditioner port .. then locate the condenser (thats in front of and looks like the radiator) .. you will notice two tubes going to that ..one is large the other small .. the small tube is the high pressure side .. the large tube is the low pressure side ... follow the large tube back until you find a cap that covers the low pressure port .. thats where you would fill with new refregerant (r134a) .. if you buy r134a, you can also get a filler hose and gage.. that hose will only hook up to the low pressure port ..it wont fit the high pressure port ...

Jul 03, 2010 | 1994 Ford Ranger Supercab

1 Answer

2000 Suzuki Vitara Air Conditioner


It does not contain Freon. It contains R134a refrigerant. You add it at the low pressure port. There is a blue or black cap on the connector. The low pressure pipe is the larger of the 2 metal pipes.

Jul 02, 2010 | 1999 Suzuki Vitara

1 Answer

Where is the low pressure port to fill ac


The low pressure port should be on the Accumulator, that's the silver cylinder that has the low side A/C line going in to it. You'll see the valve on the cylinder for you to add the R134a, do not aver fill the system. Safest way is to open and close the refill valve and let the A/C run for 2 min and see who cold the system is getting adding little at a time. To much R134a in the system will also give you poor A/C performance, to high of pressure in the system will shut down the compressor also.
Thank you for using fixya and when you think the air coming out of the vent is cold enough, stop charging the system.

Jun 02, 2010 | 1997 Chevrolet Lumina

3 Answers

R134a recharger nozzle won't fit on low pressure service port.


The low pressure port on the 2003 grand am is actually behind the engine, near the firewall on the passenger side. Good luck getting your hose down there though, I ended up buying an extension hose.

Jul 24, 2009 | 2004 Pontiac Grand Am

2 Answers

How do I charge A/C on my 97 dodge dakota


Hey Steffney..my name is Keith...to charge ya A/C on ya Dodge Dakota..you need to determine how low your R134a is...after that..you go to the autoparts store and buy the size can of R134A that you will need..some of the cans of R134A will have a servicing connector with it..some wont...so...when ya get that figured out...you start your truck and turn the A/C on maximum cool...and ya blower to high blow...then ya find ya low pressure side servicing port(its usually located on the right side under the hood..and it looks like an oversized tire inflation valve..but made out of aluminum) and you connect the can of R134A to it and follow the direction on the can of R134A....i hope this will help ya.

Jun 25, 2009 | 1997 Dodge Dakota

1 Answer

Adding r134a to 5.3l


you have two ports one on either side of orifice. one is high and other is low

Jun 28, 2008 | 2000 Chevrolet Silverado

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