R12 Low Side 7/16 in. threadedß----------à R134 Low Side 13mm Quick-disconnect R12 High Side 3/8 in. threadedß----------à R134A High Side 16mm Quick-disconnect
near the firewall on the passenger side
I found the low pressure ac port on my 2001 sable by the passenger side firewall.
You would charge it from the low side port.
The low pressure port for the 2003 sable is on the passenger side of the engine compartment. It is right at the firewall made into a hose.
On a 2001 Mercury Sable : The battery is located in the front of the engine compartment , on the drivers side
You charge through the low side port.You charge through the low side port.
The 2001 Chevrolet Impala low side service port can be found on the top of the air conditioner compressor. The port will be labeled as the low pressure port.
on the canister by the firewall on the passengers side
The 2001 Mercury Sable PCV valve can be found on top of the engine. The PCV valve will be on the back side of the air cleaner housing.
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.
Where is the low side AC port on a 2001 Monte CarloIt is located near the firewall around the center line of the car. It is horizontal not vertical. The high side port is on the drivers side near the front of the vehicle. It is vertical.
On a 2001 Mercury Sable : The thread on cap on the engine coolant reservoir ( located in your engine compartment , on the passenger side of the engine compartment ) is the pressure cap / radiator cap