just wanted to let you know that there is only the i set of ports their is no second to the rear its all the same unit.
There is an overfill bottle on the right hand side of the block underneath the hood usually black
The low side port, which is the smaller one.
You can add Freon to your 2001 Buick Century air conditioning system through the low pressure port. The low pressure port can be found on the top of the air conditioner compressor.
3.4l or 3400 v6
In the low side ac service port.
open the hood and look straight down, the port is right next to the a/c pump it usually has a blue cap on it that screws off.
The low side ac port on a 1997 Pontiac Firebird should be located on a hose on the passenger side. The hose is close to the radiator.
From below the front of the engine, look up just behind the radiator. You will see the connection.
You will need to connect your Freon bottle to the low pressure port on your 2002 Chevy Cavalier air conditioning compressor. Release the Freon into the compressor. A Freon recharge kit will come with everything you need and instructions.
You can add Freon to your 2005 Pontiac Grand Prix air conditioning system through the low pressure port. The low pressure port can be found on the air conditioner compressor.
open hood and look straight down, the port is located right next to the a/c pump.it usually has a blue or black that screws on
Freon is a brand name for various air conditioner refrigerants. Make sure you have the right refrigerant for the vehicle. Refrigerant is added to the low pressure port of the system, which is located 6 inches from the accumulator.