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Truck shuts down when raining and will not restart.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by CMK, Mar 24, 2024.

  1. Mar 24, 2024 #1
    CMK

    CMK Bobtail Member

    3
    1
    Jun 19, 2018
    ALABAMA
    0
    After I get towed the truck starts right up. Is this crazy? I have been dealing with this problem for several months. I paid $500 to get pulled 300 feet(out of the truck wash!) Could a wet wheel sensor cause this issue? I'm tired of fixing things already. Again, this only happens when it's raining. Please help! 2008 Freightliner cascadia.
     
    CMK, Mar 24, 2024
    CMK, Mar 24, 2024
    #1
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  3. Mar 24, 2024 #2
    flood

    flood Road Train Member

    4,168
    4,045
    Dec 25, 2010
    0
    First guess is the plug on the ecm...
     
    flood, Mar 24, 2024
    flood, Mar 24, 2024
    #2
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  4. Mar 24, 2024 #3
    DUNE-T

    DUNE-T Road Train Member

    7,025
    17,089
    May 10, 2015
    Detroit, MI
    0
    I don't have a Cascadia, but on my Volvo with n14, it was the harness from Ecm to batteries
     
    DUNE-T, Mar 24, 2024
    DUNE-T, Mar 24, 2024
    #3
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  5. Mar 24, 2024 #4
    Magoo1968

    Magoo1968 Road Train Member

    2,054
    5,475
    Mar 18, 2021
    St Malo mb
    0
    Windshield leaking onto computers under dash? Try washing without opening hood to eliminate under hood wiring ? Take a garden hose and soak area above windshield to see if it’s leaking into cab .. it will be a process of elimination. My issue was engine wiring which mechanic shook wiring everywhere on engine and it stalled .
     
    Magoo1968, Mar 24, 2024
    Magoo1968, Mar 24, 2024
    #4
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  7. Mar 25, 2024 #5
    Animosus

    Animosus Heavy Load Member

    730
    2,892
    Dec 7, 2015
    SE Wyoming
    0
    Cascadia's are pretty well known for windshield leaks that drip right onto the SAM_cab and cause all sorts of issues.
     
    Animosus, Mar 25, 2024
    Animosus, Mar 25, 2024
    #5
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  8. Mar 25, 2024 #6
    uncleal13

    uncleal13 Road Train Member

    3,797
    6,299
    Apr 9, 2009
    Humboldt, Sk
    0
    Yup, the Sam-Cab module is mounted right through the firewall behind the glovebox. There is a lot of connectors under the windshield apron. They are famous for this.
    Either the apron is leaking onto the engine side of the module, or the windshield is leaking into the interior side of the module.
     
    uncleal13, Mar 25, 2024
    uncleal13, Mar 25, 2024
    #6
    Rideandrepair and CMK Thank this.
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