The low side service port is located on the receiver-drier or accumulator cannister that is mounted on the right side (passenger side), back of the engine compartment and near the fire wall. If you look behind the battery (firewall, not fender) and under the block of wires on the the L-shaped metal bracket mounted on the firewall, that is where you will find it (should have a grey or black cap). Good Luck!
On a 2002 Ford Expedition : The thread on cap on the engine coolant reservoir is the pressure cap / radiator cap
The low pressure port is on a metal pipe on the passenger side of the engine bay. It is located just at the end of the radiator.
The 2002 Ford Expedition has 16 valves.
The 2002 Ford Expedition has a V8 engine.
On a 2002 Ford Expedition , 5.4 firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
any pictures
The 2002 Ford Expedition is a gas-powered vehicle.
The 2002 Ford Expedition has a 4-speed automatic.
The 2002 Ford Expedition has a 19.1 degrees angle of departure.
The 2002 Ford Expedition has single overhead cam (SOHC).
The maximum payload of the 2002 Ford Expedition is 1532 lbs..
The curb weight of the 2002 Ford Expedition is 5468 lbs..