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2007 CUMMINS ISX EGR Problem

Discussion in 'Trucks [ Eighteen Wheelers ]' started by tallmon, Mar 24, 2015.

  1. Mar 24, 2015 #1
    tallmon

    tallmon Medium Load Member

    657
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    Oct 22, 2014
    0
    2007 KW T6 with ### ISX engine. Have been getting the codes at the bottom.
    First time, dealer replaced with a reman EGR valve.
    Second time, two month later, found air filter plugged and replace EGR Diff pressure sensor.
    Now, about two month later, getting the codes again. Temp, water pressure, oil all normal.

    Any ideas? The codes come in pairs. This time around I was going to put in a EGR diff pressure sensor again and maybe a Exhaust Gas Pressure Sensor, but just put them in myself and save labor cost.


    Engine Exhaust Gas Recirculation Differential Pressure
    Engine #1
    Data Valid But Above Normal Operating Range - Moderately Severe Level
    J1939 is 0/411/16

    Engine #1
    Recirculated Engine Exhaust Gas Differential Pressure
    Data valid but above normal operational range (that is, engine overheating)
    J1708 is 128/155
     
    tallmon, Mar 24, 2015
    tallmon, Mar 24, 2015
    #1
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  3. Mar 24, 2015 #2
    tallmon

    tallmon Medium Load Member

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    Oct 22, 2014
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    I just noticed this code show up a few days after the other two codes started showing up again. It's only appeared once:

    Engine Exhaust Gas Recirculation Differential Pressure
    Engine #1
    Voltage Above Normal, Or Shorted To High Source
    J1939 is 0/411/3
     
    tallmon, Mar 24, 2015
    tallmon, Mar 24, 2015
    #2
  4. Mar 24, 2015 #3
    Heavyd

    Heavyd Road Train Member

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    Check those sensing tubes for carbon plugging and the venturi pipe and replace as needed.
     
    Heavyd, Mar 24, 2015
    Heavyd, Mar 24, 2015
    #3
  5. Mar 24, 2015 #4
    Barca

    Barca Light Load Member

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    Sep 27, 2010
    st.louis
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    +1 for what heavyd said. I had same problem last year turned out to be carbon build up on those tubes.
     
    Barca, Mar 24, 2015
    Barca, Mar 24, 2015
    #4
  7. Mar 24, 2015 #5
    Bigray

    Bigray Road Train Member

    1,135
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    Nov 23, 2007
    Tampa, Florida
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    sounds like you need a EGR TuneUp., " Cummins ISX CM871 Technical discussion"http://www.thetruckersreport.com/truckingindustryforum/trucks-eighteen-wheelers-/222173-cummins-isx-cm871-technical-discussion.html
     
    Bigray, Mar 24, 2015
    Bigray, Mar 24, 2015
    #5
    tallmon Thanks this.
  8. Mar 25, 2015 #6
    Star4900

    Star4900 Medium Load Member

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    Mar 16, 2015
    Northern Ontario
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    Something I recently found out also (whether true or not?) Just had the SECOND EGR cooler replaced on our 2012 ISX 600 with only 125,000 km's on that engine. But this last time a mechanic told me it is because the dealer he works for doesn't have a proper pump to purge all air out of the cooler after it is installed. He told me this leaves air pockets in the ends of the cooler and that cause it to overheat and fail.

    Something to think about maybe??
     
    Star4900, Mar 25, 2015
    Star4900, Mar 25, 2015
    #6
  9. Mar 25, 2015 #7
    tallmon

    tallmon Medium Load Member

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    Oct 22, 2014
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    BigRay, thanks for the tip. I just ordered all the sensors online for the cost of one sensor from the dealer. I can't wait to get my hands in there this weekend!
     
    tallmon, Mar 25, 2015
    tallmon, Mar 25, 2015
    #7
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