Prostar ISX issue

Discussion in 'International Forum' started by kubasj05, Apr 4, 2020.

  1. kubasj05

    kubasj05 Light Load Member

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    Apr 18, 2013
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    Hi there,
    This question is directed to those with good knowledge of Cummins ISX. Dealing with God #### very frustrating code (Cummins 3225 Aftertreatment purge air actuator - mechanical system not responding or out of adjustment ) or (International 3490 fmi 7, same description )
    Truck has 300k mostly original parts wise, except for new Aftertreatment air purge valve and aftertreatment fuel doser valve/injector.
    Truck does regen fine, heats up to 1040 degrees and completes the regen. When code is deleted and we run the regen everything looks fine until ECM switches from aftertreatment injector status Not dosing to Dosing. It throws Cel immediately upon switch sequence.
    What else can be checked though? Shop reported purple air line not leaking, I'm currently out of ideas so if you know something more and don't mind to share, I'd appreciate your help.
     
  2. jinxutoo

    jinxutoo Light Load Member

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    Jan 17, 2012
    Illinois
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    Does the code clear after the truck runs down the road for awhile?
    Is it derating?
     
  3. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    romulus,mi
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    Don't worry my friend. Problem is the fuel doser manifold #5308313. It is leaking internal. Have gone through this more than a few times. Trust me on this one....
     
    Heavyd and kubasj05 Thank this.
  4. kubasj05

    kubasj05 Light Load Member

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    Apr 18, 2013
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    Code is being thrown immediately after ECM requests switch to "Dosing fuel" during parked regen. Regen is successful but code stays on
     
  5. kubasj05

    kubasj05 Light Load Member

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    Thank you QUALITYTRUCK, it seems like fairly easy swap. Do you have any helpful pointers you can share with me.
    Jacob
     
  6. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    Jun 14, 2009
    romulus,mi
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    Remove inner fender. Find something soft to kneel on for a while. Hopefully your hands are small. Spray fitting that fuel line screws into with PB blast. IIRC you did a wonderful job with Maxforce manifold replacement? This is a piece of cake compared to that.
     
    kubasj05 and Heavyd Thank this.
  7. kubasj05

    kubasj05 Light Load Member

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    Apr 18, 2013
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    Yes I've done manifold replacement also hp turbo and fuel pump on Maxxforce lol.
    I still have that prostar with maxxforce and it keeps on running which is great btw. Thank you again, will come back in a few days to report findings. Have a great day and stay safe
     
    QUALITYTRUCK Thanks this.
  8. kubasj05

    kubasj05 Light Load Member

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    Apr 18, 2013
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    Hats of to you my friend, it was indeed aftertreatment fuel shut off solenoid. You were right too on "having small hands will be helpful" which I don't and I'm 6', that didn't help either. But I got it done. What made it easier to remove atsv was to remove mounting bolts on air purge valve so you're able to maneuver both atsv and apv.
    Tools needed:
    19mm ratcheting wrench open-close ended
    17mm ratcheting wrench open-close ended
    14mm ratcheting wrench open-close ended
    10mm ratcheting wrench open-close ended
    10mm socket, extension and ratchet
    Zip tie cutter
    Small hands
    Small body frame
    Patience
    2 hours if never done it before
    Thank you QUALITYTRUCK
     
  9. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

    1,368
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    Jun 14, 2009
    romulus,mi
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