DD15 coolant problem on 2015 freightliner cascadia

Discussion in 'Freightliner Forum' started by johnanai, Jan 19, 2020.

  1. johnanai

    johnanai Bobtail Member

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    Jan 19, 2020
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    Hi, I’ve been dealing with coolant pressure problem, it shows that I have high pressure cause of my coolant joins and coolant spots. The thermostat is functioning well on my guess, the way I checked it, however still didn’t figure out the problem any recommendations? Please I need help on this thing cause it’s driving me crazy
    Thanks and god bless
     
  2. Socal Xpress

    Socal Xpress Road Train Member

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    Dec 6, 2014
    Los Angeles, Ca
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    Can you explain this? Thanks
     
    mhyn and AModelCat Thank this.
  3. 062

    062 Road Train Member

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  4. mhyn

    mhyn Road Train Member

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    @johnanai
    explain this ---> it shows that I have high pressure cause of my coolant joins and coolant spots.
     
    062 Thanks this.
  5. IMSITTINGINYOURCHAIR

    IMSITTINGINYOURCHAIR Bobtail Member

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    Sep 14, 2019
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    maybe the coolant joints, like the hoses into fittings, are leaking leaving spots where they park.

    I'd replace the cap on the tank since that is the simple place to start.
     
  6. Vegas unlimited

    Vegas unlimited Bobtail Member

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    Feb 18, 2020
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    OP you need to replace your chinease coolant reservoir. Go to dealer, pay $400 for oem coolant reservoir and your problem will be gone....
     
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