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Coolant temp sensor

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Cajuncowboy654, Aug 2, 2019.

Page 2 of 2
  1. Aug 4, 2019 #11
    Cajuncowboy654

    Cajuncowboy654 Light Load Member

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    05 pete 379

    I do notice there is another sensor on the top of the thermostat housing that doesnt come up on the cat mxs diagram
     
    Cajuncowboy654, Aug 4, 2019
    Cajuncowboy654, Aug 4, 2019
    #11
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  3. Aug 4, 2019 #12
    spsauerland

    spsauerland Road Train Member

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    May 31, 2010
    West Harrison, In
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    It is supplied by Peterbilt, two wire is for gauge and single wire is for warning light.
     
    spsauerland, Aug 4, 2019
    spsauerland, Aug 4, 2019
    #12
    Cajuncowboy654 Thanks this.
  4. Aug 8, 2019 #13
    Cajuncowboy654

    Cajuncowboy654 Light Load Member

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    Jun 4, 2019
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    Ok so I hit the housing with a temp gun and its reading 157 but my gauge is just above 100.

    That's after changing both temp sensors.

    When I opened the pressure cap on the overflow this morning there was a decent amount of pressure still in the system. I shut down at 4pm yestersay and did this around 9am this morning, is this normal? Should there still be a good amount of pressure in the system that long after shutdown?
     
    Cajuncowboy654, Aug 8, 2019
    Cajuncowboy654, Aug 8, 2019
    #13
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