Regen temp for parked regen

Discussion in 'Mack Forum' started by Bander, Apr 15, 2018.

  1. balliworld

    balliworld Bobtail Member

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    Apr 25, 2019
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    Dpf cleaned 40k miles ago.
    It shows message on dashboard dpf regen occuring , let the cleaning cycle complete. I note engine hours at that point.
    No CEL. I ran two weeks with bad inlet nox sensor before compressor job was done but changed it before compressor replacement.
    I don't know about engine management cleaning. That's something new to me , I get oil change every 20 k and air filter every 50k.
    Truck has 680k miles. Only work done on it is exhaust manifold gasket and engine harness replacement around 500k. I bought it new in 2016.
    Valve adjustment done
    200 k miles ago.
     
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  3. spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Here is air management checklist. If still having issues after completing air management service, probably need to further investigate for injector(s) issues. I also clean EGR cooler around 500,000 miles too.
     

    Attached Files:

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  4. Goodysnap

    Goodysnap Road Train Member

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    I would probably clean and flow check the DPF injector as well if it wasnt done during the filter cleaning. If its plugged or not flowing enough it should be visible as low temps in the regen history.
     
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  5. balliworld

    balliworld Bobtail Member

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    Apr 25, 2019
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    I just did park regen with jpro . Dpf temp went to 1011 degrees Fahrenheit after 19 mins and stayed there till end of regen session which ended at 42 mins.
     
  6. balliworld

    balliworld Bobtail Member

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    Apr 25, 2019
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    Thank you. I will clean or replace these sensor. I did change couple of them not long ago. Egr cooler was cleaned when I got exaust manifold gasket replaced, which was around 500 k.
    Thanks again.
     
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  7. Goodysnap

    Goodysnap Road Train Member

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    Stuck in range or biased DPF pressure sensors are commonplace. Next place I would go after all above is completed and the issue persists.
     
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  8. balliworld

    balliworld Bobtail Member

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    Apr 25, 2019
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    Thanks you . I appreciate all your help.
     
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  9. spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Here is Paccar guidance on DPF regen temperatures.
     

    Attached Files:

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  10. balliworld

    balliworld Bobtail Member

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    Apr 25, 2019
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    Thank you so much.
     
  11. brysol01

    brysol01 Light Load Member

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    Nov 2, 2009
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    on my 2020 Mack Anthem, first requested parked regen at 190,000 exhaust tem on gauges
    read 750 at best several times, got towed in , the whole after treatment system needs replaced
    glad its under warrenty
     
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