yes
the number 5 cylinder on a 1998 Ford Expedition 4.6 liter v8 is the first one you see on the drivers side 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
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
Passenger side 2nd from front
Passenger side front of engine.
On a 2003 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
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Expedition
# 1 cylinder is on the passenger side of the engine , it is the front cylinder