ISX Cummins issue

Discussion in 'Trucks [ Eighteen Wheelers ]' started by rasymacmac21, Mar 30, 2015.

  1. rasymacmac21

    rasymacmac21 Light Load Member

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    Sep 25, 2009
    East of the Mississippi.
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    I have a problem with an ISX under a load. It's blowing black smoke, low power and it shuts off at times. No check engine light. Anyone knows what it might be? I was thinking EGR but there is no check engine light.
     
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  3. Hardlyevr

    Hardlyevr Road Train Member

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    Jul 30, 2009
    Mapleton Depot,PA
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    What year engine? How many miles? Original turbo?
     
    Heavyd Thanks this.
  4. LMB

    LMB "Olde Goat"

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    Aug 12, 2007
    Rocky Point NC
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    buy a new IMAP sensor
     
  5. bigguns

    bigguns Road Train Member

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    Omega,GA
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    Look at the turbo actuator. Remove it to be sure it is moving freely and not hanging up in the housing. Also move the lever on the turbo to make sure it works freely.
     
  6. SunnyRoadTrucker

    SunnyRoadTrucker Bobtail Member

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    Sep 1, 2014
    Elk Grove Village. IL
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    What kind a codes you getting on your dash???
    For example Mid128 Pid27 Fmi 13 this is EGR Valve Code...???
    First find the Codes, then you can ind the problem, DO NOT START replacing the parts one at the time!!!
     
  7. Captain Canuck

    Captain Canuck "Captain of the Ship"

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    Apr 7, 2007
    Woodstock, NB, Canada
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    Had similar symptoms with the ISX in my '06 Pete. Turned out to be the turbo AND the actuator. If you're lucky though, it's a sensor. Start with the simple stuff and go from there. It shouldn't be anything worse than the turbo itself. Do you have a pyrometer or boost gauge? What are they reading when this happens?
     
  8. Thed302

    Thed302 Light Load Member

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    Oct 30, 2014
    USA
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    Do NOT do this. The VGT actuator and sector gear are calibrated to each other, and the only way to recalibrate it is through INSITE. Unless you get it spot on, you'll have a stop engine light and a level four derate.
     
  9. bigguns

    bigguns Road Train Member

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    Jun 13, 2013
    Omega,GA
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    I replaced several actuators on the 565 ISX I had. Cummins told me nothing needed to be done after changing an actuator or turbo. I never experienced any issues. After a 1/2 day on the dyno and calling support I was told I needed to replace the turbo. In the end I found that I needed only an actuator because mine was hanging up.
     
  10. Bad Monkey

    Bad Monkey Medium Load Member

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    Jul 18, 2012
    Goshen, IN
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    Not if he has a 870 isx. That one is air powered, not electricaly. Once they went to a dpf then you are correct.
     
  11. Thed302

    Thed302 Light Load Member

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    Oct 30, 2014
    USA
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    But only if it's an 870 or earlier. 871's and later need to be calibrated.

    It would help if the OP told us what year his truck is
     
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