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2001,379, blower motor and resistor, location and repair?

Discussion in 'Peterbilt Forum' started by Mr. Cob, Aug 10, 2023.

Page 1 of 2
  1. Aug 10, 2023 #1
    Mr. Cob

    Mr. Cob Light Load Member

    268
    383
    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy All,
    I have a 2001, 379, the blower motor/fan switch will only work when on the HIGH, number 4 position and then it only barely moves any air. I am "ASSUMING" the resister is bad but have no idea of where to look for it. Again, I am "ASSUMING" the blower motor can be accessed behind the large plastic cover under the dash on the passenger side but really don't know where it's located or how to get to it, I think the blower fan is loose as it rattles when it spins.

    Any help you can give in me being able to find and replace these parts will be greatly appreciated, THANKS.

    Dave
     
    Mr. Cob, Aug 10, 2023
    Mr. Cob, Aug 10, 2023
    #1
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  3. Aug 10, 2023 #2
    FLHT

    FLHT Road Train Member

    1,116
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    Aug 2, 2014
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    Lower cover in front of passenger seat needs to be removed.
    Glove box needs to come out also.
    You will see the motor unplug wires
    Pull out rubber that feeds cold air to motor.
    4 bolts hold blower motor in air box.
    Save yourself the aggravation and buy the motor and cage as one unit.
    Them wheels are hard to get off and if you bend it it will sing to you.
     
    FLHT, Aug 10, 2023
    FLHT, Aug 10, 2023
    #2
    Mr. Cob, blairandgretchen, Coolbreezin and 1 other person Thank this.
  4. Aug 11, 2023 #3
    Coolbreezin

    Coolbreezin Medium Load Member

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    Jun 11, 2016
    Florida
    0
    Everything FLHT said sounds correct. I didn't have to remove the lower panel though. I have a 91 and mine is directly behind the glove box. The fan switch is on top. While you're in there, consider cleaning fan blades and heater core fins also.
     
    Coolbreezin, Aug 11, 2023
    Coolbreezin, Aug 11, 2023
    #3
    NightWind and Mr. Cob Thank this.
  5. Aug 11, 2023 #4
    blairandgretchen

    blairandgretchen Road Train Member

    12,323
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    Dec 9, 2011
    South west Missouri
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    Ditto @FLHT.

    Mines 1995 - about 8 screws holding the glove box in place then it's all there.

    The little panel with one screw at the passengers foot has your condenser behind it with the cabin air filter.

    I use CAB MATE - it's a plastic case with charcoal filters that you replace, I keep mine changed out pretty regular after having to replace the condenser that was totally plugged with crud from the previous owner.
     
    blairandgretchen, Aug 11, 2023
    blairandgretchen, Aug 11, 2023
    #4
    NightWind and Mr. Cob Thank this.
  7. Aug 11, 2023 #5
    Last Call

    Last Call Road Train Member

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    Mar 15, 2021
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    You get it expoused check the Connection at the harness to the resistor before you start replacing parts .. 50 to 60% of the time its that connection the terminals get corroted and cause problems sometimes you can clean the Connectors and coat them with dieelectric grease reguardless do that if you replace any parts.. that area can be prone to Is moisture
    WARNING .Do Not .. I repete Do Not .. have your hand or fingers on or near that squirrel cage if you power it up
    Don't ask me what happens or how I know
     
    Last Call, Aug 11, 2023
    Last Call, Aug 11, 2023
    #5
    NightWind, Feedman, blairandgretchen and 1 other person Thank this.
  8. Aug 11, 2023 #6
    Mr. Cob

    Mr. Cob Light Load Member

    268
    383
    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy FLHT,

    I also pilot an RKC, as well as the Pete. Thanks for your detailed explanation now It's off to tackle this task.

    Dave
     
    Mr. Cob, Aug 11, 2023
    Mr. Cob, Aug 11, 2023
    #6
  9. Aug 11, 2023 #7
    Mr. Cob

    Mr. Cob Light Load Member

    268
    383
    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy Coolbreezin,

    Thanks for the good advise to check and clean things whilst I am in there.

    Dave
     
    Mr. Cob, Aug 11, 2023
    Mr. Cob, Aug 11, 2023
    #7
    Coolbreezin Thanks this.
  10. Aug 11, 2023 #8
    Mr. Cob

    Mr. Cob Light Load Member

    268
    383
    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy blairandgrectchen,

    As I just replaced the condenser last year, I'll be sure to check out this "CAB MATE" thing. Thanks for your reply.

    Dave
     
    Mr. Cob, Aug 11, 2023
    Mr. Cob, Aug 11, 2023
    #8
    blairandgretchen Thanks this.
  11. Aug 11, 2023 #9
    Mr. Cob

    Mr. Cob Light Load Member

    268
    383
    Dec 31, 2013
    Wet side of the mountains, WA State
    0
    Howdy Catmando,

    Thanks for your reply, I don't have to ask, I too have experienced slashed fingers from them being someplace they shouldn't have been when the switch was thrown. Dialectic grease is one of my best friends NOTHING electrical goes together without it being used.

    Dave
     
    Mr. Cob, Aug 11, 2023
    Mr. Cob, Aug 11, 2023
    #9
    blairandgretchen and Last Call Thank this.
  12. Aug 11, 2023 #10
    blairandgretchen

    blairandgretchen Road Train Member

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    Dec 9, 2011
    South west Missouri
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    Old nubby fingered @Catmando is what they called him.
     
    blairandgretchen, Aug 11, 2023
    blairandgretchen, Aug 11, 2023
    #10
    Mr. Cob and Last Call Thank this.
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