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Random Shut Down Cummins ISX in 2007 Pete

Discussion in 'Trucks [ Eighteen Wheelers ]' started by acekc44, Sep 17, 2012.

  1. Sep 17, 2012 #1
    acekc44

    acekc44 Bobtail Member

    2
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    Sep 17, 2012
    0
    Engine goes from full power to idle with Red flashing shut down light on. As soon as the engine gets slowed to idle red light goes out and idles normal. Start adding fuel sometimes will go sometimes goes to idle again. Took to dealer about a month ago they replaced throttle position sensor (TPS). When got the truck back the information window on the dash showed a fault, Odometer offset recallibrated. Dealer had no clue. Today did the shut down thing again. Took to dealer computer says TPS, but they have no clue. They are now talking new ECM. have no idea of the cost, it is not my truck, but I really don't like anyone getting hosed. Has any body had this problem?
     
    acekc44, Sep 17, 2012
    acekc44, Sep 17, 2012
    #1
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  3. Sep 18, 2012 #2
    country29

    country29 Medium Load Member

    518
    156
    Feb 27, 2010
    Arkansas
    0
    get the dealer to see if it has had the recall done where you have to re-wire the plug for the tps on isx's. i worked at a pb dealer during that time and seems like 07-08, particularly 387's, we had to rewire the tps harness, they had the wrong schmatic when they wired them and it took awhile for it to show up on the truck. it would work fine for a while then i would code for tps, put new tps in until it fried if it was not rewired. maybe not be the case, but something to check.
     
    country29, Sep 18, 2012
    country29, Sep 18, 2012
    #2
    Heavyd Thanks this.
  4. Sep 19, 2012 #3
    acekc44

    acekc44 Bobtail Member

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    Sep 17, 2012
    0
    Just got it back from the dealer today. I was off on another job and did not get to talk to the dealer and they didn't have the bill ready. I did make a mistake in the post it is a ISM engine not the ISX. They said something about the ECM not communicating properly so maybe they found the plug. Time will tell we'll put it back to work tomorrow and see what happens. Thanks for the reply
     
    acekc44, Sep 19, 2012
    acekc44, Sep 19, 2012
    #3
  5. Sep 13, 2013 #4
    iroy

    iroy Bobtail Member

    4
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    Sep 13, 2013
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    similar,i9000 with isx,surges between 5th and 6th gear sometimes from start truck has auto tranny,and light flashes up and down EATON.TPS I AM THINKING BUT NOT REALLY CONVINCED.
     
    iroy, Sep 13, 2013
    iroy, Sep 13, 2013
    #4
  7. Sep 13, 2013 #5
    iroy

    iroy Bobtail Member

    4
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    Sep 13, 2013
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    right now I just disconnect and reset the computer that helps,but dont solve prob.
     
    iroy, Sep 13, 2013
    iroy, Sep 13, 2013
    #5
  8. Sep 13, 2013 #6
    iroy

    iroy Bobtail Member

    4
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    Sep 13, 2013
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    interesting get me thinking I have a 05 i9000 nash with random surges
     
    iroy, Sep 13, 2013
    iroy, Sep 13, 2013
    #6
  9. Sep 13, 2013 #7
    iroy

    iroy Bobtail Member

    4
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    Sep 13, 2013
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    any sugessions on isx tps touble .my truck is jumping like abunny rabbit
     
    iroy, Sep 13, 2013
    iroy, Sep 13, 2013
    #7
  10. Sep 13, 2013 #8
    Pilgrim007

    Pilgrim007 Light Load Member

    125
    80
    Sep 9, 2013
    0
    If its not the ECM, Check the fuel filter/pump and possible junkin the tank. Years ago I took over a truck from a disgruntled driver, and had a simlar problem. It turned out after a lot of expense he had put pieces of cardboard in the tank. Hence as fuel was sucked through the system the cardboard was suck to the bottom of the tank sealing the flow. When the fuel demand was re;leased the cardboard floated a way and the engine ran fine until the next time the flow was sealed. Which could be within ten minutes or a couple of days depending on fuel level in the tank...
     
    Pilgrim007, Sep 13, 2013
    Pilgrim007, Sep 13, 2013
    #8
  11. Sep 13, 2013 #9
    Heavyd

    Heavyd Road Train Member

    7,625
    6,027
    Feb 4, 2009
    0
    Check your main engine to cab harness that runs from the right side of the firewall, over the engine, to the left side. The harness likes to rub through on the valve cover, firewall and p-clamp stand-offs. Your TPS wiring runs through this harness.
     
    Heavyd, Sep 13, 2013
    Heavyd, Sep 13, 2013
    #9
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