ACDelco 15-5438 GM Original Equipment Air Conditioning.

AC- 1 AIR CONDITIONING SYSTEM GENERAL INFORMATION. If the valve on the high pressure side is opened, refrigerant flows in the reverse direction and could cause the service can to rupture, so open and close the valve on the low pressure side only. (c) If the service can is inverted and refrigerant is loaded in a liquid state, the liquid is compressed and causes the compressor to break down.

High pressure low side ac port

This port is typically found on the line connecting the accumulator and compressor. The high side fitting is located between the AC compressor and condenser.Consult the service manual to verify the exact location of the low-side service port.

Can't figure out low side ac recharge - CarGurus.

Connect the blue gauge on the C-manifold to the low side service port on the AC unit. The low side is the larger pipe coming out of the unit. Connect the red gauge to the high side service port on.The system consists of a high-pressure and a low-pressure side. When servicing the air conditioner, it is very important to be able to distinguish between the two. Whether simply adding refrigerant to the system, or doing more extensive work, there is a simple method that will enable you to find the low-pressure side of the car's air conditioner.I got my self a low side port retrofit ( you know the fitting to retrofit r-12 to r-135 and I remove the high pressure switch and install screw Fitting there and with a 12 volt supply I will activate the ac clutch and then I was able to pump some good R134 juice into the system :-) Good luck.


Measure static pressure with the engine off and AC not run for at least one hour. That allows the high and low pressures to equalize. But static pressure readings can only tell whether the system is completely empty or has some refrigerant in it. It can never tell you whether the charge is correct! Let’s look as some examples to see how static pressure can fool you. 3-ounce partial charge at.If there is a problem with your compressor or evaporator, adding freon will not restore cooling. How to add freon to your 1999 Chevrolet S10: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure. In addition to cooling, freon lubricates the compressor when it runs.

High pressure low side ac port

High side pressure in PSI should be about 2.2 to 2.5 times outside air temperature in degrees F. Example if it's 90 degrees F, high side should be no higher than 225PSI Here is a useful trouble shooting chart for systems currently running on freon R-134a Trouble shooting Low Compressor Discharge Pressure 1. Leak in system 2. Defective expansion valve 3. Suction valve closed 4. Freon shortage 5.

High pressure low side ac port

High and low side ports AC system 1992 Honda ( 5 Answers ) 1992 Honda Accord EX. Where are the high and low side ports located for AC system. Going to retrofit the AC port valves. Can find what I think is the low side port but cannot see the high side port. Thanks very much moyohonda In response to answer by TXgreasemonkey, I cannot find R12.

High pressure low side ac port

The low-pressure port usually has a blue or black dust cap and is located on the larger diameter metal tubing that runs between the evaporator (in the dashboard) and the compressor. To locate the.

Need help finding low pressure port on '86 Toyota pickup.

High pressure low side ac port

The compressor lowers the low-side pressure and raises the high-side to remove heat from the vehicle. A damaged compressor will not accomplish as much change in the two sides. When this occurs, cooling will diminish, especially at idle. Raising the engine speed may bring the pressures closer to that needed. Compressors in a clean and lubricated environment do not wear out. If a compressor is.

High pressure low side ac port

Step 3: Check the Pressure. Locate the low-pressure side pressure port located on the left side of the engine compartment, marked with the letter “L”. If you cannot find it, look at the back of the engine and you’ll see two aluminum pipes coming from the firewall. Follow the larger pipe and you will locate the low-pressure side pressure port.

High pressure low side ac port

When checking low-side pressure you will get two different pressure readings, one when the compressor cycles on and one when the compressor cycles off. Use the pressure reading when the compressor is cycled on and the system is operating at its highest settings (temp to max cold and fan on high). When the compressor cycles on you should see the needle on your pressure gauge begin to drop. When.

High pressure low side ac port

The low side pressure in your air conditioning system should drop down significantly when your engine is running and your AC compressor is cycling on. When the compressor shuts off or you turn your car off the pressures in the system will equalize between the high and low side so the low side pressure will read much higher. Thanks for your.

High pressure low side ac port

The low-pressure side of the device connects to the low-pressure gauge hose. The high-pressure gauge hose also connects to the corresponding high-pressure side of the unit under repair. The function of the utility port is to add more refrigerant to the AC unit. This port also connects a hose to a vacuum pump or other recovery units.

AC.Low Side and High Side - Car Forums and Automotive Chat.

High pressure low side ac port

The air conditioning system is virtually divided in two sides, one side is a high pressure high temperature and the other is a low pressure low temperature. On the high pressure side, after the compressor has done its job compressing and raising the temperature and pressure of the refrigerant, this refrigerant in a vapor state is supposed to condense in the condenser. The process of.

High pressure low side ac port

Repair low side service port by tightening valve cores that become loose and allow refrigerant to leak out. Includes valve core tool, popular replacement valve cores, and low and high side valve protective caps.

High pressure low side ac port

The low pressure is too low and the high side is too high. You have a bad expansion valve that is not allowing enough Freon into the evaporator assembly. The high side is hot due to the low pressure on the low side. You will need an expansion valve, dryer evacuate and charge the system. The high side should be two times outside temp plus 15%.