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windshield wiper motor problem

Discussion in 'Truck & Equipment Repair' started by mcwlandscaping, Oct 18, 2007.

  1. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    On occastion lately i noticed that when i go to use my wipers, the motor jsut makes somewhat of a buzzing noise and they dont' move, unfortunatly, it usually happens while it is, or after a rain! After awhile it usually is fine and is good for awhile, but what could be causing this problem? Bad ground somewhere that when it gets wet the ground doesn't work? Then as the motor compartment gets warm and dries everything is fine? Any help would be greatly appreciated!!

    thanks
    -mike-
     
  2. Sydenstricker Landscaping

    Sydenstricker Landscaping PlowSite Veteran
    Messages: 3,882

    I think you are gonna need to replace the unit. I think the circut boards in them go to crap
     
  3. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    The pulse board goes bad in them. You can buy just the board separately, but if the motor is as old as the truck, I'd just replace the whole wiper motor. No point in putting a $30 board in a 10 year old motor.
     
  4. MickiRig1

    MickiRig1 PlowSite Veteran
    Messages: 3,617

    Just replace the whole thing. You don't want it to make it's last buzz in the middle of a storm at 2AM. If it's like older Fords it will have a separate control module ($85) for the delay function. This is what goes first on them, but it controls the show no module no wipers. Without it a new motor just sits there. So look it up in a pro-manual the regular manuals may not have the info.
     
  5. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    $55 for a new one.....$10 core charge

    I also have a mechanic friend saying that he had this problem and it was caused by a bad ground, and just grounded the motor directly to the frame and was fine. It will definitely be replaced REAL soon though
     
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    $55 sounds like a good buy..

    FYI, The poor ground is due to the broken circuit board...that's why you can get away with just grounding the motor directly sometimes. It bypass's the poor ground in the board.
     
  7. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    Thanks!!! so it's probably the motor...i'll put that on the to-do list for tomorrow and hope it gets me through tonight because i don't have time to do it now!!
     
  8. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Yep, replacing the motor will fix it. A good tip here also, while you have the plastic cowl panels off swapping the motor, take the time and lube all the wiper linkage in the cowl while your in there. Make's a world of difference...
     
  9. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    Definintely will do! I didn't end up doing it this weekend due to time restrictions, the horrible part was it didn't work for awhile on friday night driving around in the rain :( thank god i have rain-x!!!
     
  10. sechracer

    sechracer Senior Member
    Messages: 478

    if you havent replaced it yet... when the motor makes that noise, just turn the wipers on, open the hood and smack the motor with the palm of your hand. It will make the ground for the wipers to work.... but definitly replace it. My 97 did the same thing.
     
  11. mcwlandscaping

    mcwlandscaping 2000 Club Member
    Messages: 2,557

    lol, that's exactly what ive been doing!!
     
  12. MickiRig1

    MickiRig1 PlowSite Veteran
    Messages: 3,617

    Some of the signs an older Ford's wiper system is going: First the delay timing keeps changing. Then it stops the wiper in mid-wipe when on delay. Then it starts doing it on regular low speed. Soon after that the system gives up and quits working at all.