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2005 T800 blower switch problem

Discussion in 'Kenworth Forum' started by Skiddz, Oct 12, 2015.

  1. Oct 12, 2015 #1
    Skiddz

    Skiddz Bobtail Member

    5
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    Oct 12, 2015
    0
    I've burnt out 3 fan speed switches and I don't know why. When the fan is on high, and high only, the switch gets very hot and burns out in about a week. I've changed the resistors, changed the blower motor, and gave it a new, good solid ground with heavier gauge wire, but it still get incredibly hot. Any Ideas?
     
    Skiddz, Oct 12, 2015
    Skiddz, Oct 12, 2015
    #1
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  3. Oct 12, 2015 #2
    baha

    baha Road Train Member

    4,137
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    Jul 25, 2013
    ga
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    When you put the fan blade on new fan motor did it rub on inside plastic housing, may have to remove fan and ck. for rub on fan blade hub?
     
    baha, Oct 12, 2015
    baha, Oct 12, 2015
    #2
  4. Oct 12, 2015 #3
    Skiddz

    Skiddz Bobtail Member

    5
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    Oct 12, 2015
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    Nope, its definitely not rubbing , its has plenty of clearance all around.
     
    Skiddz, Oct 12, 2015
    Skiddz, Oct 12, 2015
    #3
    baha Thanks this.
  5. Oct 12, 2015 #4
    BoxCarKidd

    BoxCarKidd Road Train Member

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    Could the wiring at the switch be bad from being previously overheated? High resistance can generate heat and transfer to the switch.
     
    BoxCarKidd, Oct 12, 2015
    BoxCarKidd, Oct 12, 2015
    #4
  7. Oct 13, 2015 #5
    Skiddz

    Skiddz Bobtail Member

    5
    1
    Oct 12, 2015
    0
    I'll replace the terminals today and see I that helps, thanks all
     
    Skiddz, Oct 13, 2015
    Skiddz, Oct 13, 2015
    #5
  8. Nov 30, 2017 #6
    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 issue?
     
    ran99, Nov 30, 2017
    ran99, Nov 30, 2017
    #6
  9. Dec 19, 2017 #7
    bigguns

    bigguns Road Train Member

    2,846
    6,854
    Jun 13, 2013
    Omega,GA
    0
    When the 3 speed switch gets hot the motor is usually the culprit. Buy a switch, the short pigtail for the switch, a resistor, and the motor. Put all four parts in and you should be good to go.
     
    bigguns, Dec 19, 2017
    bigguns, Dec 19, 2017
    #7
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