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Blower motor in a 2020 389

Discussion in 'Peterbilt Forum' started by Michigantrvcker, Feb 4, 2022.

  1. Feb 4, 2022 #1
    Michigantrvcker

    Michigantrvcker Bobtail Member

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    Feb 4, 2022
    0
    I’ve been having an issue with my blower just stops working entirely. The truck will be sitting still and it just cuts off without me messing with anything. Replaced the dash control module and it hadn’t happened again until today, same scenario, got back in my truck and it wasnt working. Fuses are all good and it kicked back on after a nasty bump. Where do i go from here?
     
    Michigantrvcker, Feb 4, 2022
    Michigantrvcker, Feb 4, 2022
    #1
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  3. Feb 4, 2022 #2
    Banker

    Banker Road Train Member

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    Aug 19, 2012
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    I had a similar issue on my 2015 389 AC control where a wire had rubbed a small spot of insulation off and was grounding out sporadically. It was a tiny spot and was almost missed when looking for it. A couple months prior I had a wire rub on a marker light switch causing my marker lights to flash when they were turned off. Wire loom tubing and zip ties has so far prevented more issues. Mine would also do it sitting still idling.
     
    Last edited: Feb 4, 2022
    Banker, Feb 4, 2022
    Banker, Feb 4, 2022
    #2
  4. Feb 4, 2022 #3
    Goodysnap

    Goodysnap Road Train Member

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    Inspect the wiring connectors at the Blower motor for heat damage or melting/ bad connections.
     
    Goodysnap, Feb 4, 2022
    Goodysnap, Feb 4, 2022
    #3
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