Where is the low side port on 02 mercury mountaineer?

The low side port on a 2002 Mercury Mountaineer is located on the AC system's evaporator line, typically near the passenger side of the engine bay. It can usually be found near the firewall or close to the compressor, and it's marked with a blue or black cap. To ensure you're connecting to the correct port, refer to the vehicle's service manual or look for the label indicating high and low pressure ports.