1998 E36 318iS - Heater motor has life of its own...

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  1. 1998 E36 318iS - Heater motor has life of its own... 
    #1
    BMW Master
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    Nimr0d's Car Details
    Model of Car:
    318is
    Year of Manufacture:
    1998
    Transmission Type:
    Manual
    Car Body Type:
    Saloon
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    Well, it all started a couple of days ago, when i tryed to turn the blower down, and it took about 5 mins to slow, and then picked up speed again, on its own

    So i got my hand on a new control unit (i have Dual-zone climate) and another 'hedgehog'...And it worked ok, until yesterday, when i didn't see the point having it trying to blow 16c air when it was 26 outside, and i had the windows down. So i turned it off. Was ok for about 10 mins, then the motor came on, the screen was off, but it came on, and got faster and faster, then slowed, then switched off, then came on again about 5 mins later. It kept doing this for the whole 1 1/2 hrs i was driving. I dont know whats wrong with it, and the screen is currently disconected, will see if it starts up on its own even without a screen later.

    Anyone any idea whats wrong? Could it be a short/fault in the wiring..Or is my motor cursed
     
     

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    #2
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    donny121's Car Details
    Model of Car:
    316i
    Year of Manufacture:
    2000
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    Where did you get the unit, was it a recon? these are prone to failing I rekon you got a dud replacement.. I dont think the hedgehog would cause this I think that controlls the speed but the head unit tells it what speed to blow at.
     
     

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    #3
    BMW Master
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    Nimr0d's Car Details
    Model of Car:
    318is
    Year of Manufacture:
    1998
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    Manual
    Car Body Type:
    Saloon
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    Out of my mates 328 coupe. I worked fine in his, and my old one works fine in his. Something about my car it seems
     
     

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    #4
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    donny121's Car Details
    Model of Car:
    316i
    Year of Manufacture:
    2000
    Transmission Type:
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    Seems strange I have to say. The obviouse is a connection fault I'm not sure if theirs anything else other than the head unit that controlls the fans. Just a thought though maybe its a dodgy temp sensor sending wrong signals.. just a wild gues though!
     
     

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