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DD13 sensor with orange jacket, what is it

Discussion in 'Freightliner Forum' started by shatteredsquare, Jun 29, 2021.

  1. Jun 29, 2021 #1
    shatteredsquare

    shatteredsquare Road Train Member

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    the big silver plug, the only one with the orange jacket, on driver side under intake, what is it? its starting to squirt soot on stuff below and around the sensor, looks like printer toner. ~420k miles on engine
     
    shatteredsquare, Jun 29, 2021
    shatteredsquare, Jun 29, 2021
    #1
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  3. Jun 29, 2021 #2
    Cattleman84

    Cattleman84 Road Train Member

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    Pictures would help.
     
    Cattleman84, Jun 29, 2021
    Cattleman84, Jun 29, 2021
    #2
  4. Jun 29, 2021 #3
    shatteredsquare

    shatteredsquare Road Train Member

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    the plug with the orange jacket, on driver side of 2017 DD13 below intake stuff. it's starting to leak soot out from around the sensor seal

    [​IMG]
     
    shatteredsquare, Jun 29, 2021
    shatteredsquare, Jun 29, 2021
    #3
  5. Jun 30, 2021 #4
    shatteredsquare

    shatteredsquare Road Train Member

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    screw ring holding it in was hand loose. anybody know what it is
     
    shatteredsquare, Jun 30, 2021
    shatteredsquare, Jun 30, 2021
    #4
  7. Jun 30, 2021 #5
    uncleal13

    uncleal13 Road Train Member

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    The orange is indication of 120 volt ac power. It’s an engine block heater. The heating element is immersed in an engine coolant passage.
     
    uncleal13, Jun 30, 2021
    uncleal13, Jun 30, 2021
    #5
    AModelCat, D.Tibbitt and shatteredsquare Thank this.
  8. Jun 30, 2021 #6
    SWM_TECH

    SWM_TECH Light Load Member

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    Apr 15, 2018
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    The ring is just a retainer to hold the cord to the heating element of block heater. This Heating element is threaded into oil/coolant module and has an o-ring seal. This will not be leaking soot, as it is in coolant. The soot is from another source like the cold boost pipe or intake manifold. Anything downstream of the EGR the comes around the front of engine and gets mixed into the cold boost pipe.
     
    SWM_TECH, Jun 30, 2021
    SWM_TECH, Jun 30, 2021
    #6
    Magoo1968 and AModelCat Thank this.
  9. Jul 7, 2021 #7
    shatteredsquare

    shatteredsquare Road Train Member

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    it must be coming from the intake gasket above it, can't see how tf there is soot all around and behind the block heater plug but none actually on it. intake isn't loose but there's one bolt that looks impossible to get to on bottom left corner, the same dealership that left my compressor hose unplugged replaced the coolant line and i bet the intake tube had to come of to do the coolant line. or maybe it just good time for a new leak. always a good time for a leak
     
    shatteredsquare, Jul 7, 2021
    shatteredsquare, Jul 7, 2021
    #7
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