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windsheild wipers

Discussion in 'The Garage' started by Drey, Mar 30, 2006.

  1. Drey

    Drey 3/4 ton status

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    ok gentlemen, i was using my wipers on the way home today, and when i got home and went to turn them off instead of stoping at the bottom of my windsheild they went down, then came halfway back up. I dont get it. I can push them back down by hand, but any time i use them and turn them back off they stop halfway up. Do you guys have any idea what this could be?
     
  2. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    On which vehicle?
     
  3. Drey

    Drey 3/4 ton status

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    sorry i didnt specify

    its on my 96 S10 Blazer
     
  4. goldwing2000

    goldwing2000 Guest

    Sounds like a messed up park circuit in the motor. Don't know if it's repairable other than replacing the motor.
     
  5. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    fwiw, my buddy just put a new wiper motor in his 84 k5 and instead of stopping in the down position, they stop at the top of their stroke!
     
    Last edited: Mar 31, 2006
  6. goldwing2000

    goldwing2000 Guest

    That sounds like he has the motor arm 180° out. Should be a simple fix. Just take the arm off the motor, move the wipers down and re-attach the arm.
     
  7. gmcman355

    gmcman355 Registered Member

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    dont replace the motor yet it sounds like youve got a bad wiper circuit board. call your local gm dealer and they might replace it for free. i work at one and at least in this part of the country it fit into a special policy for certain years and vin breaks kinda like a recall but not quite
     
  8. goldwing2000

    goldwing2000 Guest

    Good call. I had forgotten about that.
     
  9. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    but if he removes the arm and puts it at the bottom of its stroke, then the wiper motor would try to pull the wiper blade down onto the hood rather than pulling it up the windshield.
     
  10. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    That's right. The factory repair manual's debugging chart for an '85 full-size says stopping anywhere but the usual "off" position is a symptom of a defective park switch on a bad terminal board (or a terminal board with dirty contacts). I didn't mention this earlier, because I wasn't sure how dissimilar an 85 full-size and a 96 S-10 were in the wiper department.:confused:
     
  11. goldwing2000

    goldwing2000 Guest

    No.

    A wiper motor just rotates around in a circle. The position of the linkage is what determines where the wipers go. Obviously, when he took the old motor out, he changed the position of something in the linkage and then put it together wrong.

    If the wipers go back and forth and then park when the switch is shut off, then there is nothing wrong with the motor.
     
  12. goldwing2000

    goldwing2000 Guest

    If he hadn't just replaced the motor, I would agree with you. But since he DID just replace the motor, then that's probably not the case.
     
  13. 1985_K5_Silverado

    1985_K5_Silverado 1/2 ton status

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    I missed the motor replacement (sorry about that), and in that case, I'd lean your way. Like the "but I'm sure I don't have the distributor 180 deg out, really really sure - oh, no wait it is 180 out" thing that happens far too often.
     
  14. goldwing2000

    goldwing2000 Guest

    LoL... yeah, I've been that guy. :D
     

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