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The low side service valve is located in the line that runs from the compressor through the evaporator (firewall) and up to the condensor on the low pressure (suction) side of the system.
Locate the accumulator bolted to the firewall on your automobile. It usually bolts to the passenger side firewall but this is not a rule. However, it will be located on the passenger side of the engine bay. The accumulator is approximately 12-inches in length, 4-inches in diameter and has at least tow large hoses extending from it. These hoses are the high side and low side hoses. Locate the metal portions of the high side and low side hoses. Each hose comprises of a hard-metal line and soft-rubber line secured together. The metal portion of the hose bolts to the accumulator. Locate the low side and high side valves. They are located on the metal portion of the hose connected to the accumulator and both have black plastic caps covering them. The high side valve is a 16mm quick disconnect valve and the low side valve is a 13mm quick disconnect valve
The easiest way to locate the low side charge port on any vehicle is to locate the A/C compressor, follow the "larger" of the two lines all the way back to the firewall. Some where along that line you will find the low side charge port.
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find the compressor it runs off the belt then locate the two lines there is a high side and a low side there should be caps over the fittings you must charge the low side to find the low side the lines run by the rad in on side and out the other it runs in on the high and exits on the low the fitting should only fit on the low side on most vehicles or they could be color coated red and blue blue is the low side check out you tube for some videos on how to
2.4L engine AC low side charge port is located near the right shock tower. 3.4-3.1 engines AC low side charge port.remove right tire on driver side.remove splash shield.
both of the a/c service ports should be located next to the pass. side strut tower. the low side adapter may be hard to find though. If youcan not find it there, it is possible that the low side port could possibly be at the dryer on the drivers side front up beside the condensor
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