The port is located on the low pressure line. The low pressure line is the larger of the two lines coming from the A/C compressor. Also it should have a blue cap covering the port.
The A/C low side service port is by the Firewall, just below the Passenger's Side Windshield Wiper Arm.....
You will find it on the larger diameter line coming out of the firewall from the evaporator. It should be pretty close to the firewall. You can look at a diagram of the A/C system on the website link below. Just follow the "How to locate the low side port" icon.
You can find the low side on the a/c compressor or on the low side suction hose...........
The small connector in the a/c line is the low port and the big connector is the high port side ...
The service port is located on the a/c accumulator...........
Listed on the A/C placard. More than likely R134a
Low side port for A/C is located on passenger side to the back of engine. about where the second spark plug forward
im trying to find out where the a/c low side service port is on my 95 buick century
The low side a/c port is located behind the right front fender liner.
where is the low pressure port for the a/c -- 93 ford ranger 4.0L -- super-cab
The low pressure service port is on top of the accumulator (the bottle) located on the passenger side of the engine compartment. It is next to the wiper fluid fill bottle near the grille. It is the SMALLER of the A/C service ports. The high port is on the driver's side. It has a big valve on a smaller diameter line. If you are filling with 134A you MUST fill at the low port...the one on the accumulator (bottle).