To replace a windshield wiper motor for a 1998 F150, first remove the bottom trim on the window. Then remove both wiper blade assemblies and all screws on the metal cowling. Remove the retaining clip from the wiper motor linkage and pull the controls rods off.
If the windshield wipers are not working in a 1998 Ford F150, the cause could be a blown fuse. There could also be a problem with the vacuum hoses connected to the wiper motor or the wiper motor itself.
Check fuses and relays
top of the fire wall under the hood your wiper arms will connect
If you'd like to replace a wiper motor on a Ford F-150 you need disconnect the negative battery cable, remove mounting bolts, and replace old wiper with new unit. When you've installed new unit connect electrical harness and wiper arm to motor.
The governor for the wipers is located near the fuse box. It is wired to the harness going to the wiper switch.
Take it to a Ford Dealer.
First you have to remove the wiper arms. Then remove the cowl plate between the windshield and the hood (screws will be in the top of the plate and inside the hood). This will give you access to the back of the wiper motor. There you will find a clip holding the wiper arm mechanism to the motor shaft. Remove the clip and the arm mechanism. Now remove the connectors and take the nuts off the front of the wiper motor. It will pull off the firewall. Reverse procedure to install new one.
The Ford motor company recommends you use 10W-30 weight motor oil in the 1998 Ford F1 50 truck. A heavier weight motor oil can be used in extreme climates.
the motor for your power windows is shot, or your wiring is gone
There is a C clip that holds them on.
How do I replace the block heater in my 1998 F150 4.6L?