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810 - motor stays running...

Discussion in 'Blizzard Plows Discussion' started by jhook, Jan 24, 2009.

  1. jhook

    jhook Senior Member
    Messages: 375

    Ok, so I have an 810. What happens is I go out and raise the plow and/or use one of the other functions and the motor keeps running after I let go of the button. Even if I turn off the power to the controller, the up and down lights will stay on and the motor keeps running. It will run for maybe 30 seconds or so and then stop.

    I am thinking that the power is being fed back up somehow but I am not sure where to start looking. While the motor is running, I can't use any of the controls.

    Couple of things... I have been using this plow and truck all season BUT not together, I just put this plow on this truck. My first inclination was to check the plug on the harness but it is all the way together. I had the truck parked inside the shop last night so I was able to make sure the plug was together without any ice or crap in there.

    Any idea where to start looking? I am going to have a nap and then head out to see what I can figure out. Plus the truck will be warm again by then :)
     
  2. Mark Witcher

    Mark Witcher Senior Member
    Messages: 604

    Sticking selonoid. Replace it. Happened on my 810 two years ago. It melted the battery ground wire .
     
  3. jhook

    jhook Senior Member
    Messages: 375

    The main selonoid? I was going to start by testing that. Was just heading out now.
     
  4. IMAGE

    IMAGE Sponsor
    Messages: 1,741

    that was gonna be my suggestion also.
     
  5. jhook

    jhook Senior Member
    Messages: 375

    When I run the plow with the external switch (the one on the plow) it does not stick on. Only when I operate it from the controller (every time I push a button). Leaning toward a short someplace. Likely in the main plug. Taking one of the kids out to push the buttons...
     
  6. jhook

    jhook Senior Member
    Messages: 375

    If I remove the wire that runs the solenoid, it shuts off right away so this leads me to believe that it is not the solenoid. If the solenoid was sticking, it would stay on even if the other wire wasn't there. Somehow there is power coming back up the brown/white wire.

    I played around with the plug harness and I think the problem is in there. If I wiggle it a bit I can make the problem go away temporarily.
     
  7. fireside

    fireside Senior Member
    Messages: 661

    CHECK all the GROUNDS starting with the group on the plow. I would remove them all and clean them. Then the plug on the truck then the battery side. I have had that happen many times before mostly lose bolt on plow pump side. Check the grounds that should solve your problem.
     
  8. jhook

    jhook Senior Member
    Messages: 375

    I did clean the ground connection on the battery side but I didn't check the one on the plow side. Good point. I'll clean that one off too.
     
  9. beam

    beam Senior Member
    from pa
    Messages: 314

    Check truck side harness conection maybe moisture in pins worst case is truck side harness is needing replaced:cry:
     
  10. jhook

    jhook Senior Member
    Messages: 375

    Ya, I am really close to changing the harness. I have actually had to replace 2 of them so far (I have owned 4 810's) so it is not uncommon for them to fail. One melted on me and the other one I could test power in a wire right above the harness but there was no power in the corresponding pin. Once I check my connections if I still have trouble the harness is next. I keep one extra in stock here :)
     
  11. beam

    beam Senior Member
    from pa
    Messages: 314

    sorry about your luck :cry:
     
  12. fireside

    fireside Senior Member
    Messages: 661

    I have found most harness problems are caused by corrosion in the plug. Clean them out with electricail motor cleaner. It removes most corrosion you may find. Power to small wire on seloind is caused by a grounding problem or lack of ground.
     
  13. fastjohnny

    fastjohnny Senior Member
    Messages: 654

    Fluid film is your friend, use it liberally
     
  14. procut1

    procut1 Senior Member
    Messages: 380

    Its in the plug.

    Its always in the plug.

    Stupid stupid plug with those tiny posts.

    And wait until you price the replacement. Hold on to your underwear because you;ll fly out of them.

    I cut the plugs off and replaced them with trailer connectors.
     
  15. jhook

    jhook Senior Member
    Messages: 375

    Well, just as an update. I cleaned all the main battery connections and really worked the plugs together and everything worked fine last night. So far so good. We use a dielectric grease in the plugs so have never had any corrosion in there.
     
  16. beam

    beam Senior Member
    from pa
    Messages: 314

    MOISTURE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! most common problem with those types of plugs.. need better designs:help:
     
  17. Mark Witcher

    Mark Witcher Senior Member
    Messages: 604

    Clean all the Dielectric grease out of the plug. It will cause more shorts than water if there is more than just a light film of the grease in there.
     
  18. jkaky

    jkaky Junior Member
    from Indiana
    Messages: 5

    check the diode board. had same problem last year. board was melted inside plastic housing causing it to short out. cheap fix, spent way to long looking for the problem in valves and solenoids.
     
  19. damian

    damian Senior Member
    Messages: 330

    Better plugs are in the works guys,yes i do not like these plugs either but it is what we have,you must keep them clean,dielectric only, and capped.his problem sounds like vehicle or plow harness trouble,again,swap controller w/known good just to be sure if you can.
     
  20. jhook

    jhook Senior Member
    Messages: 375

    Just an update. Plow still working fine since last post. Again, cleaned it up, brought it in the shop and let it all warm up and made SURE the plug was together all the way. So far, so good. I do have a replacement plug in stock just in case.