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T700 DPF nightmare

Discussion in 'Kenworth Forum' started by Yajmekk, Mar 9, 2012.

Page 2 of 3
  1. Mar 10, 2012 #11
    Gasienica

    Gasienica Heavy Load Member

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    Sep 7, 2011
    0
    What kind of cooler?
     
    Gasienica, Mar 10, 2012
    Gasienica, Mar 10, 2012
    #11
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  3. Mar 11, 2012 #12
    barroll

    barroll Road Train Member

    1,096
    544
    Nov 23, 2010
    Southwest Michigan
    0
    A regen A DAY? My system only needs a regen every 40,000 miles or so. That sounds like something is seriously wrong.
     
    barroll, Mar 11, 2012
    barroll, Mar 11, 2012
    #12
  4. Mar 11, 2012 #13
    Marc Letourneau

    Marc Letourneau Light Load Member

    119
    26
    Feb 23, 2012
    Worcester Massachusetts
    0
    40,000 Miles? This must be a different system. Does your truck require DEF?

    Something is wrong with the truck if you are required to do it manually.. Does "service DEF system" Come up on the computer?
     
    Marc Letourneau, Mar 11, 2012
    Marc Letourneau, Mar 11, 2012
    #13
  5. Mar 11, 2012 #14
    barroll

    barroll Road Train Member

    1,096
    544
    Nov 23, 2010
    Southwest Michigan
    0
    No. It was a 2010 pete 386 with a cummins ISX 450ST no DEF.
     
    barroll, Mar 11, 2012
    barroll, Mar 11, 2012
    #14
  7. Mar 12, 2012 #15
    KW Parts Guy

    KW Parts Guy Light Load Member

    230
    78
    Jul 16, 2011
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    Have you had your DPF serviced yet?
     
    KW Parts Guy, Mar 12, 2012
    KW Parts Guy, Mar 12, 2012
    #15
  8. Mar 12, 2012 #16
    Yajmekk

    Yajmekk Bobtail Member

    11
    0
    Mar 9, 2012
    Denver, CO
    0
    2 times in the last 30,000 miles
     
    Yajmekk, Mar 12, 2012
    Yajmekk, Mar 12, 2012
    #16
  9. Mar 12, 2012 #17
    barroll

    barroll Road Train Member

    1,096
    544
    Nov 23, 2010
    Southwest Michigan
    0
    I only had it from 240000-320000 miles. Regen light was on when I got it, so I ran it, then ran it again around 285000.
     
    barroll, Mar 12, 2012
    barroll, Mar 12, 2012
    #17
  10. Mar 13, 2012 #18
    Yajmekk

    Yajmekk Bobtail Member

    11
    0
    Mar 9, 2012
    Denver, CO
    0
    So I got my truck back this morning, they cleaned the filter and replaced a "wiff sensor?" Anyway other than the new sensor it's nothing new to this truck so it'll be clogged again soon. Now my update here is the mentioned during testing and troubleshooting something about my inhibitor switch being depressed 4 times but he wouldn't be very clear about when, I was at the shop while they were finishing and they ran a parked Regen after the cleaning and it seemed to take twice as long as normal and I'm thinking that's when the inhibitor switch was "depressed" so I'm thinking the inhibitor switch or the programming in the ECM is malfunctioning telling the computer the inhibitor switch is active, also I know what the inhibitor switch is I'm just curious if anyone else has had a malfunctioning one because he did say he couldn't do anything for it.
     
    Yajmekk, Mar 13, 2012
    Yajmekk, Mar 13, 2012
    #18
  11. Mar 13, 2012 #19
    KW Parts Guy

    KW Parts Guy Light Load Member

    230
    78
    Jul 16, 2011
    0
    WIF = Water in Fuel, bottom of your fuel filter assmebly, typically. Nothing to do with your DPF.

    I meant when was the last time your DPF was dis-assembled and cleaned, along with the catalyst unit?
     
    KW Parts Guy, Mar 13, 2012
    KW Parts Guy, Mar 13, 2012
    #19
  12. Mar 14, 2012 #20
    Yajmekk

    Yajmekk Bobtail Member

    11
    0
    Mar 9, 2012
    Denver, CO
    0
    The DPF was removed and cleaned about 10000 miles ago and it just got cleaned out again, they said it was almost 90% full.
     
    Yajmekk, Mar 14, 2012
    Yajmekk, Mar 14, 2012
    #20
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