underneath the Explorer , below the drivers door , mounted in the frame rail
Back by the tank.
Mounted on the engine block.
Purchase a Purolator filter as it comes with complete instructions. I think you will find that a 1998 F150 does not have a cabin filter.
below the alternator which is located near the firewall
On my 1998 Ford Expedition XLT. The oil filter was located on the drivers side behind or near the front bumper.
The electric fuel pump is inside the fuel tank
Here is a picture showing the fuel filter on a 1998 ford festiva trio. It is near the battery. http://img522.imageshack.us/img522/6351festiva1998fuelfilter2yn6.jpg
Fuel filter is located between engine and firewall on drivers side of engine comartment
under the front bumper on drivers side
The oil filter on a 1998 Ford Expedition 5.4 Triton engine is located just behind the bumper on the drivers side. Im not sure of the answer above for on my 98 expedition (5.4) the oil filter is located on the engine(drivers side), nothing near the bumper.
The Owner Guide doesn't show a cabin filter for the 1998 Ford Expedition
should be on top of the engine. it doesent look like a normal fuel filter.