I changed mine (1992) by removing the vented piece that runs between the windshield and the hood. Pop the hood and you will find screws to remove this as well as a a few screws from the top in between the grill type vents near the wiper blades. ( Remove the wiper arms and unscrew th antennae also) Lift this pc. out and you will gain access to the nuts that secure the motor to the firewall. Remove the motor harness, then disconnect the motor from the wiper connector. Try new motor by connecting to the harness and turning it on from the cab BEFORE you take anything apart. This will verify taht the motor is the problem. Good luck!
Check fuses and relays
check fuses or 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.
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.
The governor for the wipers is located near the fuse box. It is wired to the harness going to the wiper switch.
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.
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.
There is a C clip that holds them on.
Remove transmission oil pan for access to filter Change fluid, filter, and gasket
Windshield Wiper Motor Removal & Installation Front 1. Turn the ignition switch to the ON position. Turn the ignition switch ON until the wiper blades are straight up, then turn the ignition switch OFF. 2. Disconnect the negative battery cable. 3. Remove the right-hand and left-hand windshield wiper arm and blade assemblies. 4. Remove the cowl top vent panels. 5. Detach the electrical hardness connector at the windshield wiper motor assembly. 6. Remove 3 wiper motor (module assembly) retaining bolts and remove the module assembly from the vehicle. 7. Remove the wiper linkage retaining bolt and remove the linkage from the wiper motor. 8. Remove 3 retaining nuts and remove the windshield wiper motor. To install; 9. Place the windshield wiper motor in position and install 3 retaining nuts. Tighten to 10-12 ft. lbs. (12-17 Nm). 10. Connect the wiper linkage to the windshield wiper motor and install the retaining bolt. Tighten the bolts to 14 ft. lbs. (20 Nm). 11. Place the wiper motor (module assembly) in position and install 3 retaining bolts. Tighten the bolts to 6 ft. lbs. (9Nm). 12. Install the electrical hardness connector to the windshield wiper motor. 13. Connect the negative battery cable. 14. Allow the windshield wiper motor to cycle several times while checking for proper wiper motor operation. 15. Turn the windshield wiper motor to the OFFposition to park the wiper motor in the park position. 16. Install the cowl top vent panels. 17. Install the wiper arm and blade assemblies. Install the retaining nuts and tighten to 22-29 ft. lbs. (30-40 Nm). 18. Connect the negative battery cable. 19. Check the windshield wiper motor for proper operation and the wiper arms for adjustment.