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Def

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Micki88, Mar 9, 2017.

  1. Mar 9, 2017 #1
    Micki88

    Micki88 Bobtail Member

    1
    0
    Mar 9, 2017
    0
    I have a 2012 cascadia with a DD15 my def gauge is stuck on full and the tank is full also been like this for the past 3000miles. Any ideas what's going on?
     
    Micki88, Mar 9, 2017
    Micki88, Mar 9, 2017
    #1
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  3. Mar 9, 2017 #2
    Lon76

    Lon76 Bobtail Member

    11
    12
    Feb 23, 2017
    iowa
    0
    I would say there is something wrong with your system. Should probably get checked out before it derates and leaves you stranded. I take it you filled the def tank drove 3000 miles and the tank is still full. The truck i used to drive had dd13 and used about 2% def for the fuel that was used.
     
    Lon76, Mar 9, 2017
    Lon76, Mar 9, 2017
    #2
  4. Mar 9, 2017 #3
    Bike rider

    Bike rider Bobtail Member

    48
    33
    Apr 11, 2016
    0
    I would say there is a problem and you will be heading for a derate situation, our long haul highway trucks go about 5000 miles between fill ups, obviously this depends on DEF tank size, but I would say the truck is not pumping DEF for some reason.
     
    Bike rider, Mar 9, 2017
    Bike rider, Mar 9, 2017
    #3
  5. Mar 9, 2017 #4
    Kenworth 4life

    Kenworth 4life Medium Load Member

    423
    6,711
    Feb 16, 2017
    Augusta, Maine
    0
    Im so glad I don't have this issue!
     
    Kenworth 4life, Mar 9, 2017
    Kenworth 4life, Mar 9, 2017
    #4
    SAR Thanks this.
  7. Mar 9, 2017 #5
    25(2)+2

    25(2)+2 Trucker Forum STAFF Staff Member

    18,694
    43,263
    Sep 18, 2006
    the road less travelled
    0
    The guage may be wrong, and the first segment usually does last longer, I can believe it showing full yet at 3000 miles.

    We usually fill at the shop, without a meter. But I'd start topping it off, if you are allowed to, when you fill up with fuel, to get an idea of how much it is using.
     
    25(2)+2, Mar 9, 2017
    25(2)+2, Mar 9, 2017
    #5
  8. Mar 9, 2017 #6
    gunner76

    gunner76 Medium Load Member

    500
    137
    Mar 11, 2010
    IA
    0
    Did you just buy the truck? I'm only asking because if you did maybe the previous owner bypassed the DEF system and just didn't tell anyone.
     
    gunner76, Mar 9, 2017
    gunner76, Mar 9, 2017
    #6
    Olson Diesel LLC Thanks this.
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