Both the 4.6L and the 5.4L are the same firing order. Cylinder number 3 is located on the passengers side 3rd from the front of the radiator to the back of the engine.
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
On a Ford Expedition : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
On a 2003 Ford Expedition : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
V8 engine in Ford Expedition firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front
The full size Ford Expedition has only had V8 engines ( 4.6 + 5.4 liter ) If you mean the number 6 engine cylinder : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
Which engine??? If it's the 5.4 it is on the number 3 cylinder. Which is the third one back on the driver side of the engine.