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by Fatneck on June 12th, 2006

Fatneck

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The wipers only work on high on my 1991 Ford F-250. I've replaced the motor and switch and they only work on high. What's wrong?

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Answers. 4 helpful answers below.

  • by Darryl61 on June 14th, 2006

    Darryl61

    did you put in new parts or used? Ford trucks in my experience (I've owned 6) have a thing for wiper switches, especially in high humidity areas. If you have replaced both the switch and the motor with new parts and still have the problem, you have a defective new part.

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  • by wHosIt on January 11th, 2007

    wHosIt

    There may be a hi/lo relay. If so the default position is low but, it may be stuck in the high position. Get a wiring diagram and see if there is.

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  • by Fatneck on June 15th, 2006

    Fatneck

    Thanks for the info. All parts are new. I was worrying if there is a relay or control module that might be bad also.

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  • by jerryd.anderson on October 6th, 2011

    jerryd.anderson

    I have the same problem it is the wiper governor it is right next to the fuse panel under the dash . I couldn't find it at Ford and it is no longer available at LMC Trucks, however I found it at Silverstateford.

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