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2001 w900 blower motor

Discussion in 'Kenworth Forum' started by rydr, Aug 30, 2021.

  1. Aug 30, 2021 #1
    rydr

    rydr Light Load Member

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    92
    Jan 8, 2019
    0
    Lost top speed on my cab blower motor. Speed 1 and 2 work fine, but switch to 3 and it shuts off, was working fine a few days ago. Is there a resistor or a relay I need to replace? This is my first KW, I've only been around peterbilts, but both are paccar so I thought they would be a similar set up.

    Checked all fuses and swapped around the relays down by the clutch, and nothing changed.
     
    rydr, Aug 30, 2021
    rydr, Aug 30, 2021
    #1
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  3. Aug 30, 2021 #2
    skallagrime

    skallagrime Road Train Member

    3,597
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    Apr 10, 2012
    Indiana
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    If the resistor blows normally it only has off and full bore. Resistor, open passenger side door, theres a plug just below glove box on the side, unplug it, if you get full speed back, might try replacing it.

    I would lean more towards the switch/connector in the ac control box being bad, its a replaceable cheap part, 15$ vs the whole control (700$)
     
    skallagrime, Aug 30, 2021
    skallagrime, Aug 30, 2021
    #2
  4. Aug 30, 2021 #3
    circle h

    circle h Light Load Member

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    Oct 22, 2020
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    71r1160 is the part number of the switch. Mine did the same thing. There is a guy on ebay called heavy_air he has the switch and connector for cheap. I am replacing my blower motor also. They are 50 bucks. Something made the switch melt. Better safe than sorry.
     
    circle h, Aug 30, 2021
    circle h, Aug 30, 2021
    #3
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