Cascadia Cummins ISX 400 10 speed Shakes when accelerating. At any speed, even while parked.

Discussion in 'Freightliner Forum' started by Martinez.adrian4521, Jan 11, 2021.

  1. Martinez.adrian4521

    Martinez.adrian4521 Bobtail Member

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    Jan 11, 2021
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    Good Afternoon,

    I bought this truck about a year ago and for the last 4 months it has had some terrible shaking problems. (I attached the video below) . It happens any time the gas pedal is pressed. But if the truck is coasting on neutral it does not shake. If accelerated on neutral it begins to shake. I have taken it to three mechanics and none have figured it out. King pin, alingment, mounts, are all good. Truck runs fine no problems other than this annoying shake.
    Any information helps,

    sincerely,
    Adrian
     
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  3. baha

    baha Road Train Member

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    ga
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    Sounds like a injector is not firing any fuel into cil.
     
  4. AModelCat

    AModelCat Road Train Member

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    Canuckistan
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    Beat me to it lol.
     
  5. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    romulus,mi
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    Find a new, competent mechanic to use. King pins and alignment should have never factored into this problem. Two excellent guesses above just listening to a 30 second video.
     
  6. Martinez.adrian4521

    Martinez.adrian4521 Bobtail Member

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    Jan 11, 2021
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    Thank you! I will be looking into this asap.
     
  7. RocketyMan

    RocketyMan Medium Load Member

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    The ISX is a straight 6 cylinder engine. There are a couple of advantages of using a straight 6 engine. One of them is that they are inherently balanced in terms of their firing order. You can deactivate one or the other fuel banks to determine what bank the cylinder mis-fire is on. You should be able to do single cylinder deactivation as well.

    From the video, it is clearly a misfire. Just like mentioned above--most likely an injector not firing at all....or no compression on that cylinder.

    My specialty is detroit, and I was able to do this on a DD15 rather easy to determine the offending cylinder. Cummins, I'd imagine they should have something similar.
     
  8. RocketyMan

    RocketyMan Medium Load Member

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    Jun 5, 2015
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    Here is a video showing the process I described above.

     
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