Cummins ISX

Discussion in 'Freightliner Forum' started by zaheerkarim, Oct 3, 2013.

  1. zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    Hello,

    I have a Freightliner FLD with a Cummins ISX engine. It suddenly has the Engine Check light on once it is started, and a very slight misfire. Can you please help me on how I could diagnose what the problem could be. It is the first time I have owned a truck with that engine and I don't have a clue on what to check.

    I will appreciate all suggestions.
     
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  3. Thad2777

    Thad2777 Bobtail Member

    6
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    Oct 3, 2013
    0
    Change Fuel filter
     
  4. GrapeApe

    GrapeApe Road Train Member

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    Get the flash codes.
     
  5. zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    How do I get the flash codes?
     
  6. GrapeApe

    GrapeApe Road Train Member

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    There is a diagnostic switch somewhere. It's usually on the dash or down low by the data link connector.
     
  7. Blind Driver

    Blind Driver Road Train Member

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    Aug 7, 2006
    New Albany, IN
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    I was told the codes can only be pulled with Insight :shrug:
     
  8. GrapeApe

    GrapeApe Road Train Member

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    Sometimes it's under the dash near the data link plug. I have yet to see a Cummins without one (ones that support flash codes that is). Newer ones do not support flash codes because they display codes right on the dash, so no need for flash codes.
     
  9. zaheerkarim

    zaheerkarim Light Load Member

    73
    3
    Jun 21, 2011
    Malawi
    0
    I have changed the fuel filter but the Engine Check is still on. I have seen the diagnostic switch on the dash, I have tried switching it on and off but nothing happens. Can you advise how I go about this switch to get the codes.
     
    baha Thanks this.
  10. Thad2777

    Thad2777 Bobtail Member

    6
    0
    Oct 3, 2013
    0
    Hook If Up T InsiteMost Dealers Have it
     
  11. baha

    baha Road Train Member

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    Jul 25, 2013
    ga
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    look under key 4 it with ENG. off key on. or some cruz. switch up push speed switch up. count flash.
     
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