60 series surging

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by o1reb, Jul 14, 2019.

  1. o1reb

    o1reb Bobtail Member

    46
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    Apr 28, 2012
    bedford
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    14 liter det when it warms up starts to surge from 900 1300 rpm dealer says wiring harness no codes new pedal all sensors replaced egr replaced only thing left turbo ? got new harness from det wrong one. nuts. 09 freightlnr
     
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  3. x1Heavy

    x1Heavy Road Train Member

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    If the dealer effeted up with the wrong harness then turn th ones that does not hae clothes for fit
     
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  4. LoneRanger

    LoneRanger Road Train Member

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    Had something similar, is it doing while not under load? Say cursing the parking lot at around 900 rpm in 2nd 3rd gear?
     
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  5. Intothesunset

    Intothesunset Road Train Member

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    09 Freightliner is 10 years old. The ecm may be dying. The batteries are rated for 10 years.
     
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  6. x1Heavy

    x1Heavy Road Train Member

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    Once dead.... you will NEVER get a restart out of it. You can crank until cows come home, ultimately
     
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  7. o1reb

    o1reb Bobtail Member

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    Apr 28, 2012
    bedford
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    you got it load or no load but only when warm
     
  8. jamespmack

    jamespmack Road Train Member

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    Clean and or replace all Grounds fpr batteries and engine. Check ground stud welded in frame.
     
  9. LoneRanger

    LoneRanger Road Train Member

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    What I replaced was throttle valve, it fixed the issue for about 2 months then restarted again. Hope the info helps you track it down.
     
  10. thejudges69

    thejudges69 Light Load Member

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    If your having a battery issue in the ecm, it will give a code 31 I believe. Someone above stated the batteries are good for 10 years? I disagree. There are thousands of ecms still running on detroits well over 10 years with original batteries. Diagnose first, don't throw parts at it. Which wiring harness did the dealer suggest you change?
     
  11. o1reb

    o1reb Bobtail Member

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    Apr 28, 2012
    bedford
    0
    will do thanks
     
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