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Auto REGEN Issues

Discussion in 'Trucks [ Eighteen Wheelers ]' started by manny1423, Oct 22, 2015.

  1. Oct 22, 2015 #1
    manny1423

    manny1423 Bobtail Member

    12
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    Feb 14, 2015
    0
    Hello everyone,

    I have a 2011 International Prostar with Cummins ISX engine. I have been having auto regen issues. The truck keeps doing auto regens by itself every couple hours. At first they told me it as because my engine was bad which it was. I overhauled the engine. However, the truck still keeps regening every 2 hours. I have sent the filter for cleaning twice already and changed all the sensors and the faceplug. Nothing seems to be working and the computers do not bring any codes up. It is eating away on my power and MPG. Can anyone help me as to why this thing keep regenning itself every 2 hours? Thank you!
     
    manny1423, Oct 22, 2015
    manny1423, Oct 22, 2015
    #1
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  3. Oct 22, 2015 #2
    drdesl

    drdesl Light Load Member

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    Oct 7, 2015
    Billings, Montana
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    Exhaust backpressure sensor causing the Ecm to think that the DPF is full and needing regen?
     
    drdesl, Oct 22, 2015
    drdesl, Oct 22, 2015
    #2
  4. Oct 22, 2015 #3
    manny1423

    manny1423 Bobtail Member

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    Feb 14, 2015
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    But if the sensor was bad would the computer not give a code?
     
    manny1423, Oct 22, 2015
    manny1423, Oct 22, 2015
    #3
  5. Oct 22, 2015 #4
    scottied67

    scottied67 Road Train Member

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    california norte
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    what is a faceplug? is that the dozer/7th injector you're talking about? If the dozer is bad or dirty it won't shoot the fuel into the dpf to cook off the crap properly.
     
    scottied67, Oct 22, 2015
    scottied67, Oct 22, 2015
    #4
  7. Oct 22, 2015 #5
    baha

    baha Road Train Member

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    Jul 25, 2013
    ga
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    What fuel mi. is isx getting after overhaul, if fuel mi. is bad filter may be plugging early from extra unburnt fuel going into filter?
     
    baha, Oct 22, 2015
    baha, Oct 22, 2015
    #5
  8. Oct 22, 2015 #6
    GrapeApe

    GrapeApe Road Train Member

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    Jan 7, 2013
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    When you had the DPF cleaned, did they give you a report show how it flow tested before and after? Can I assume that your engine had the typical carbon packing ans was using oil? When you had the DPF cleaned, was the DOC checked or cleaned too? It sounds like it may have just burned too much oil and cannot be cleaned good enough anymore. You may need to replace the DPF. If it restriction high restriction and the restriction is reduced to aceptable levels after the regen, it wont set any codes. If it gets much worse, it may start setting a fault for too frequent regens, or high restrcition after regen, but it's probably not bad enough to set those faults yet.
     
    GrapeApe, Oct 22, 2015
    GrapeApe, Oct 22, 2015
    #6
  9. Oct 23, 2015 #7
    drdesl

    drdesl Light Load Member

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    Oct 7, 2015
    Billings, Montana
    0
    Not if the sensor is packed with soot itself. It thinks it needs a regen, even though you had the dpf cleaned. Just something I have seen in the past couple years with the ISX.
     
    drdesl, Oct 23, 2015
    drdesl, Oct 23, 2015
    #7
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