Question about 1986 Ford F150 SuperCab

1 Answer

Wiper motor problem

Hi,, i just change new wiper motor and still dont work?? please help me ,if you can,,,

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  • SgtLeary90 May 04, 2009

    I'm restoring a 1986 Ford F-150 and recently replaced the wiper motor. I do not have intermittent wipers so there is only a low or high setting. When I put it on low setting I hear a whine and the wipers move really slow. If I move the switch a little harder than a jiggle they stop. When I put it on the high setting they freeze where they are and do not move until I put it back on the low setting. Sometimes they just freeze up in any position and weather or not the truck is running they still wont move. All the fuses and wiring look fine and when I looked at the switch exterior it didn't look like anything was wrong. If they freeze up in a position I've turned the switch and ignition off and manually and gently reset the wiper arms in the resting position and when I turn the switch back on they'll come on normally again sometimes with a whine and sometimes just regularly but the high setting still won't work. I think it is the switch itself but just want to be certain. Any helpful advice would be greatly appreciated.

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First of all, even though the manuals don't list the wiper motor circuit as being protected by or through the fuse panel, check your fuses and make sure they're good. Some other models are protected, and I have found a few mistakes in the manuals. It may be an auxilliary circuit. There are only a few items in the wiper circuit, so next check all the electrical connectors, some times it doesn't take much for a connection to fault. Since you have a new motor (it just might be a bad one, been known to happen), there's only the wiper switch, and I'm sure on the supercab, an internal governor. The governor is located right behind the dash panel, close to the back end of the switch. The wire from the switch runs to the governor, and then to the motor. You also have a ground wire coming off the switch, so make sure it's clean and tight. Check all the grounds used in the circuit. And that's about it. The only other thing I can think of would be the possibility of something not right on the windshield washer side of it, but I've never dealt with that personally to know what to tell you off the top of my head. Good luck, I hope this helps, but if not, there are some tests you can perform to check out the separate parts, and different functions, so let me know if I can help you through those.

Posted on Sep 11, 2008

  • Harley Sep 11, 2008

    no comment

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