C15 low power

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Harper60, Dec 10, 2018.

  1. Harper60

    Harper60 Bobtail Member

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    It comes on but goes away after a few seconds. It has a couple of old codes with the cruise control trick, codes 62 and 63. Low coolant and extreme coolant temp but that was have been before all the work was done on the truck. Hoping they just didnt know what they were doing and put in the wrong trim codes and reflash, wouldn't surprise me if they derated it so the clutch wouldn't slip or something, I've had that happen on a 6 speed dodge I bought once.
     
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  3. Cam Roberts

    Cam Roberts Road Train Member

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    you sound angry.
     
  4. Cam Roberts

    Cam Roberts Road Train Member

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    i think everyone got the idea in this thread now.
     
  5. 062

    062 Road Train Member

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    Do you use the cruise or run pedal only?
     
  6. Cam Roberts

    Cam Roberts Road Train Member

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    ill bet there is where you find your issue at this point.
     
  7. Harper60

    Harper60 Bobtail Member

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    I do both
     
  8. swaan

    swaan Road Train Member

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    Nope, more like baffled with the bull ####
     
    Cam Roberts Thanks this.
  9. Harper60

    Harper60 Bobtail Member

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    Well he reflashed my ecm, it was set at 475hp 1650tq, also said it wasn't the correct file. Seems to be running way better now, will know for sure when the next job starts. I appreciate all the feedback, y'all are great! I'll update after I get a load under her
     
  10. Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    What file did he flash in it ? Did he changed the fls/fts Numbers ?
     
    jamespmack Thanks this.
  11. Harper60

    Harper60 Bobtail Member

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    Ya know I'm not sure, it was a cat stock 500hp 1850tq highway file. I couldn't tell you the file number odd the top of my head
     
    jamespmack Thanks this.
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