An expert who has achieved level 2 by getting 100 points
An expert that got 10 achievements.
An expert that got 5 achievements.
An expert whose answer got voted for 100 times.
Re: 01 Suburban AC question
Check the space between the ports, it is common to have both fittings on the same line if and only if the orifice tube is located between them because thats what seperates the low pressure side from the high pressure side, the high pressure side will be warm to hot when the a/c is running, once the hot liquid hits the orifice tube it turns into a cool vapor, so if you feel one side is hot and one side is cool then the orifice tube is whats between them and it is true that the low and high pressure sides can be on the same line.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
THE LINES THAT RUN FROM THE AC ARE TWO SIZES. THE SMALLER DIAMETER IS THE HI SIDE. IT RUNS FROM THE COMPRESSOR TO THE CONDENSER. THE LARGER DIAMETER IS THE LOW SIDE AND RUNS TO THE EVAPORATOR INSIDE THE CAR. THE FILLER FOR THE LOW SIDE IS ON THE LARGER LINE. IT WOULD HELP TO KNOW THE CAR IN QUESTION WHICH WASN'T PROVIDED
To find the ports, you will have to follow the high and low lines from the compressor, usually not far away, and indicated with red and blue caps on the scrader valves. The low pressure line is bigger in diameter than the high pressure line. You need to know which refrigerant is being used in this system as it could be the old R-12, which was banned. Could also be an R-12 system converted to R-134a with different high and low ports.
Either on the "dryer" which is the bottle shaped item usually next to the radiator or firewall or on the largest diameter a/c hose, not the smaller diameter. You will feel this hose get cold if you are on the right one. I'm guessing you have a standard recharge kit from Wal-Mart, AutoZone, etc. which consists of a pressure gauge, screw on tap, valve, hose with attached fitting if yours differs let me know before proceeding otherwise, first attach hose to the low pressure charging port on the refrigerant line. This will be on the larger tube usually near or on the accumulator. The silver aluminum cylinder with several wire connections and 2 black plastic covers which will be your quick connect connections the smaller diameter one will be your low pressure side. Be sure to wear gloves and eye protection!!!
Thank you for contacting Fixya.com
You find the AC low pressure at the top of the compressor, orientated toward you , facing the front of the
vehicle. You can also follow the compressor line to reach the port.
The valve is covered a plastic cap covering it. Near the compressor you find two ports, the high port and low port.
To find out which one is the low port, run the air conditioner for a couple of minutes withthe engine on. Then turn off the care and touch the lines from compressor to the two ports covered with
plastic caps. Only one of the pipes will be cold, the cold line will lead you to the low port.
there are 2 ports one for low pressure and one for high pressure. the low pressure is bigger in diameter and is usually close to the dryer and or fender and firewall. the high pressure is near the condensor on the fron of the vehicle. if there are caps for the ports low will be blue and high will be red. low side pressure should be 35-50 psi and high pressure should be 135-150 psi
there are 2 of them one is at the reciever dryer inside the engine compartment (its inside the low pressure side ac line) the other is inside the unit in the rear and is a different style with a cap tube attached
You have a large diameter suction pipe 1/2" and a small pressure pipe 3/8" coming from your a/c compressor, follow the larger pipe until you come to a plastic cap sitting on the line, take off cap to see filler valve. Looks like a large tire valve.