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Blower Motor problem

Discussion in 'Kenworth Forum' started by 352Cat, Oct 21, 2016.

Page 1 of 2
  1. Oct 21, 2016 #1
    352Cat

    352Cat Bobtail Member

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    Oct 21, 2016
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    I have a 2005 T800. My blower motor will run on all levels, AC or heat for a few minutes then shuts off. I replaced the relay, motor, and the switches. I checked wires and conections. Still not staying on. Is there a resistor somewhere that might be bad?
     
    352Cat, Oct 21, 2016
    352Cat, Oct 21, 2016
    #1
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  3. Oct 21, 2016 #2
    pigeon river trucking

    pigeon river trucking Light Load Member

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    Jan 1, 2016
    michigan
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    Sounds like maybe a weak fuse breaker
     
    pigeon river trucking, Oct 21, 2016
    pigeon river trucking, Oct 21, 2016
    #2
  4. Oct 21, 2016 #3
    352Cat

    352Cat Bobtail Member

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    Oct 21, 2016
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    Thank for the come back. I figured out the motor runs on the same fuse and relay as the FM and CB radio. They stay on, but the motor shuts off.
     
    352Cat, Oct 21, 2016
    352Cat, Oct 21, 2016
    #3
    pigeon river trucking Thanks this.
  5. Oct 21, 2016 #4
    pigeon river trucking

    pigeon river trucking Light Load Member

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    Jan 1, 2016
    michigan
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    How long before it will turn back on
     
    pigeon river trucking, Oct 21, 2016
    pigeon river trucking, Oct 21, 2016
    #4
  7. Oct 21, 2016 #5
    352Cat

    352Cat Bobtail Member

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    Oct 21, 2016
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    Maybe 2-3 minutes
     
    352Cat, Oct 21, 2016
    352Cat, Oct 21, 2016
    #5
  8. Oct 21, 2016 #6
    thejackal

    thejackal Road Train Member

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    Mar 1, 2014
    detroit mi
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    Run direct current to the motor. If it remains on constantly chances are your dash control switch is going bad. I believe the low to high switch is a pentometer.. basically a variable resistor and it might be defective.
     
    thejackal, Oct 21, 2016
    thejackal, Oct 21, 2016
    #6
  9. Oct 21, 2016 #7
    352Cat

    352Cat Bobtail Member

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    Oct 21, 2016
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    Thanks jackal. All switches are new and installed today.
     
    352Cat, Oct 21, 2016
    352Cat, Oct 21, 2016
    #7
    thejackal Thanks this.
  10. Oct 21, 2016 #8
    352Cat

    352Cat Bobtail Member

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    Oct 21, 2016
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    I just read in a old thread I may have a resister in a air duct behind my center console. I will check that.
     
    352Cat, Oct 21, 2016
    352Cat, Oct 21, 2016
    #8
    pigeon river trucking Thanks this.
  11. Nov 30, 2017 #9
    ran99

    ran99 Bobtail Member

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    Nov 30, 2017
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    Im having the same problem. Did you ever resolve this?
     
    ran99, Nov 30, 2017
    ran99, Nov 30, 2017
    #9
  12. Dec 5, 2017 #10
    tnpete

    tnpete Medium Load Member

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    Jun 25, 2013
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    When mine was doing that. It was the relay, it was getting weak. And would cut out. Let it cool for a little while. And work again for a couple of minutes.
    I also cleaned the ground wire on the blower motor. Now will blow and move air like it should.
    Pete
     
    tnpete, Dec 5, 2017
    tnpete, Dec 5, 2017
    #10
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