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Thread: Passenger Window motor not working (again!)

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  1. #11 Re: Passenger Window motor not working (again!) 
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    Hi Pete - Two points raised by this thread. (1) There should be a few holes drilled in the bottom of the door to drain any water, as detailed in the build manual (Marlin not following their own instructions?). (2) In view of the current these motors draw they really should be wired through a relay which would help prolong the life of the switch. If you do take the motor out, clean and test on the bench to ensure free running, then any subsequent stiffness is due to installation problems - eg the inner door panel flexing as power is applied. Dave.
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  2. #12 Re: Passenger Window motor not working (again!) 
    frequent forum contributor Club Member b_caswell's Avatar
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    If the windows not raisin its probably a currant problem but if there is water in the door it wont help old fruit!
    Ben Caswell probably not the last word on anything here!!
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  3. #13 Re: Passenger Window motor not working (again!) 
    frequent forum contributor Club Member greyV8pete's Avatar
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    Quote Originally Posted by dave_kitson View Post
    Hi Pete - Two points raised by this thread. (1) There should be a few holes drilled in the bottom of the door to drain any water, as detailed in the build manual (Marlin not following their own instructions?). (2) In view of the current these motors draw they really should be wired through a relay which would help prolong the life of the switch. If you do take the motor out, clean and test on the bench to ensure free running, then any subsequent stiffness is due to installation problems - eg the inner door panel flexing as power is applied. Dave.
    Hi Dave. Yes I do have holes in the bottom of the door one front and one back to cope with up and down hill parking. Since I added the temporary earth wire so far no problems. Time will tell I guess. Peter.
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  4. #14 Re: Passenger Window motor not working (again!) 
    frequent forum contributor Club Member greyV8pete's Avatar
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    Quote Originally Posted by b_caswell View Post
    If the windows not raisin its probably a currant problem but if there is water in the door it wont help old fruit!
    OHMG this could get terminally out of hand unless I have the capacity to show some resistance and get it permanently down to earth.
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  5. #15 Re: Passenger Window motor not working (again!) 
    frequent forum contributor Club Member b_caswell's Avatar
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    Well its not a wind up!!
    Ben Caswell probably not the last word on anything here!!
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  6. #16 Re: Passenger Window motor not working (again!) 
    Club Member dcunn's Avatar
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    This is shocking, you bright sparks are too wired up
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  7. #17 Re: Passenger Window motor not working (again!) 
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    Couldn't fail to connect with this ,especially as my resistance is so low
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  8. #18  
    frequent forum contributor Club Member chris_cussen's Avatar
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    Groan!
    I'm not 100% sure you have fixed the problem
    See the diagram below
    aaaa.jpg

    The motor is wires so that the + and - supplies cross over. The switch connects the +ve supply to the blue wire and the -ve supply to the green wire when it is Up, and the +ve supply to the green wire and the -ve supply to the blue wire when down.

    So the earthing occurs in the through the switch and not from the motor as the supply gets swapped over, which means the earth wire you have between to door and chassis will have no effect. You may have a break in one of the wires where it is flexed as it goes through the door hinge, giving intermittant results.

    Sorry about the quality of the diagram, but I'm not so good with paint.
    Cabrio, Omex 2.0l 150bhp Zetec blacktop, Omex ECU and wiring loom.
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  9. #19 Re: Passenger Window motor not working (again!) 
    frequent forum contributor Club Member greyV8pete's Avatar
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    Quote Originally Posted by chris_cussen View Post
    Groan!
    I'm not 100% sure you have fixed the problem
    See the diagram below
    aaaa.jpg

    The motor is wires so that the + and - supplies cross over. The switch connects the +ve supply to the blue wire and the -ve supply to the green wire when it is Up, and the +ve supply to the green wire and the -ve supply to the blue wire when down.

    So the earthing occurs in the through the switch and not from the motor as the supply gets swapped over, which means the earth wire you have between to door and chassis will have no effect. You may have a break in one of the wires where it is flexed as it goes through the door hinge, giving intermittant results.

    Sorry about the quality of the diagram, but I'm not so good with paint.
    It's a good diagram and helps clarify the faint image in the Haynes manual. I am not convinced that I have fixed the original problem either. I will look at the ends of the earth wires next time I have the dash out. Peter.
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  10. #20 Re: Passenger Window motor not working (again!) 
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    Hi Peter,
    It occurred to me that the earth strap was probably not the cure. Is it possible that one of the wires to the motor is broken internally? Probably where it flexes when the door is opened. You might have disturbed it when fitting the extra wire.
    Paul
    PS: The rest of you should retreat to your ohms.
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