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A/c low pressure port- where is it and what does it look like?

We are trying to see if our a/c issue is due to low coolant. However, we can't locate the low pressure port. A picture or diagram would be great, too!

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6ya6ya
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Posted on Jan 02, 2017

  • 1 Answer

SOURCE: location of low pressure port A/c to added 134a

Down low between the radiator and the engine. Look for the cap. Very hard to reach without burning your hand if the engine is hot. I had to rig a much longer hose to add 134a so the can would be upright while putting it in.

Posted on Sep 25, 2008

polarcycle
  • 1392 Answers

SOURCE: cant find the low pressure port to charge a/c on 2000 olds alero

It should be near the compressor on the low side line. It is a huge pain to get to. Feel along the line, and you should come to the fitting.

Posted on Mar 06, 2009

emissionwiz
  • 75822 Answers

SOURCE: location of low side ac port

the low side charging port is near the AC Accumulator/Reciever dryer cannister in the larger of the 2 AC lines.

Posted on Apr 07, 2009

  • 67 Answers

SOURCE: low on r134a refrig.

IS YOUR CAR 6CLY OR IS V8 5.3L

Posted on Apr 17, 2009

lastech
  • 408 Answers

SOURCE: AC low pressure port location

hello,good day,you have a 210 model with v 8 engine,your high pressure connection is located at front of your condenser,beside your ax.fan,then your low pressure connection is located at engine walling near your vacuum hose for brake booster,right side ,standing in front,ty

Posted on May 13, 2009

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1 Answer

My 2009 Dodge Ram 1500's AC is not blowing cold


Most likely your system just needs to be charged with r134a coolant. You can do it yourself. Just head down to the local auto parts store and buy a can of coolant that comes with a hose and gauge attached and then locate you low pressure port on you system. It is typically located on the passenger side between the radiator and the firewall on a silver tube. Don't worry you can't make a mistake as the coupler will only fit the low pressure side. When you locate it remove the cap and hook up gauge and can. Start the car and turn the AC to mac cold and highest fan speed. Then open the gauge depending on ambient temperature out side your gauge should read between 35-45 psi. The gauge should also be color coordinated as long as you don't fill until the gauge is in the red. Your good. Then close the gauge, remove it from the low pressure port and replace the cap on the port. (When the coolant is flowing into your system the can should turn quite cold and maybe even have some frost on it. No worries that is normal).

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Location of ac low pressure port location 2004 chevorlet avalanch


Look back on the firewall for the two a/c lines. One is large and on is much smaller. The larger line is the low pressure line. Follow that line back to the compressor. The low pressure port will be on that line.

Sep 01, 2012 | 2004 Chevrolet Avalanche

1 Answer

Where is the low ac port on a ford freestyle 2005... trying to locate to add coolant to my ac


hi.
ford usually hide the low pressure port behind one of the frond indicators. usually the right indicator.
hope this helps

Jul 17, 2011 | Ford Freestyle Cars & Trucks

1 Answer

Which service port do I use to add coolant to the air conditioning, the one located at the rear of the engine compartment by the fire wall or the one up front by the radiator?


Hi,
The low pressure port for recharging is usually the one near the firewall. That line will also go to a cannister and then into the firewall to the evaporator core. The one by the radiator is usually the high pressure side. Your connector will only fit the low pressure (correct) port for filling, as the 2 ports are different sizes.
Please rate this answer! Thanks, Mike

Jun 20, 2011 | 1995 Plymouth Voyager

1 Answer

Location of the lower pressure hose for ac of a 2003 oldsmobile silhouette. Trying to install coolant bought from Wal-Mart.


One cap is labeled "H" (for high pressure) and the other is labeled "L" for low. As a further safety measure, the ports are different sizes so you physically cannot attach the pressure gauge or hose to the wrong port! It's pretty failsafe. follow a/c hoses back from pump and you will find it, its cap is marked " L ". ( low side ). have a good day !!

Jun 06, 2011 | Oldsmobile Silhouette Cars & Trucks

1 Answer

Where is the low pressure port for the air conditioning on my 2002 chevy tahoe


when standing in front of engine high and low ports are located on the left to the back of the coolant reservoir. the low side is the smaller of the two.

Jun 05, 2011 | 2002 Chevrolet Tahoe

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Where to add coolant for radiator on a 95 vw jetta?


Add Coolant to spherical reservoir at right rear of engine compartment as viewed from front. If it is low the coolant gauge flashing light will warn you of a low condition.

Jan 01, 2010 | 1995 Volkswagen Jetta

1 Answer

KNOCKING ENGINE


Hi. There are two main issues that will cause the engine to knock. The first will be the oil pump. If the oil pump is failing, or damaged, this will produce a low oil pressure state. Low oil pressure will cause the internals to not receive the necessary lubrication needed for optimal performance. This low pressure state will cause the rod bearings to ware, thus, producing this knocking noise. This will be accompanied by a low pressure, or illuminated oil light. The next issue will be worn, or damaged rod bearings. These vital bearings can fail if the bearing clearance is excessive, or worn. They will, also, fail if the oil supply is not sufficient. This inspection will require you to drain all oil and coolant, and the dropping of the oil pan, to expose these bearings.Worn, or excessive bearing clearances will cause a knock.

NOTE_ There is another issue that i should warn of. If There is sufficient sludge build up in this engine, due to not changing the oil regularly, or not administering scheduled engine flushing, this will cause the internal oil ports to clog up, thus, inducing poor oil circulation. This will damage the entire engine. If you have not had this engine flushed, i would recommend to schedule this , asap.

Dec 08, 2009 | 1996 Ford Explorer

1 Answer

Where is the high pressure air conditioning coolant valve located on a 98 MPV ?  We are trying to recharge the coolant.  Found the low pressure valve - can't see the high pressure / red one...


Some times they are hard to find.Find the high side line/hose,on the compressor,follow the line until you find the ac high side service port.The small line is the high side,If I can help any further let me know roniecon@gmail.com

Jul 22, 2009 | 1998 Mazda MPV

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