Cat C15 BXS misfire and rough running

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by fenix1981, Sep 6, 2018.

  1. fenix1981

    fenix1981 Bobtail Member

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    Sep 6, 2018
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    Thanks.
    We find the problem. It’s the ECM.
     
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  3. fenix1981

    fenix1981 Bobtail Member

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    Sep 6, 2018
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    Thanks ppl. It’s a ECM problem.
     
    Expeditor Thanks this.
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  5. Expeditor

    Expeditor Medium Load Member

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    Should be easy fix, thanks for coming back and letting us know.
     
  6. kranky1

    kranky1 Road Train Member

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    It may be worth looking at the harness while you’re there. We have 2 BXS engines, and both have had the engine harness replaced due to chafing on the debris cover on the harness where it plugs into the ECM.
     
  7. fenix1981

    fenix1981 Bobtail Member

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    Sep 6, 2018
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    Thanks. We’re gonna check.
     
  8. frustrated trucker

    frustrated trucker Bobtail Member

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    Feb 14, 2019
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    how hard its to replace the harness for someone with not much experience?
     
  9. Goodysnap

    Goodysnap Road Train Member

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    Replacing these inside harness's is definitely a job for an experienced mechanic. Depending on what chassis it's in, Jake housings may need to be removed front or rear. Older rusty trucks will have broken bolts in the head and things will be frozen together.
     
    frustrated trucker Thanks this.
  10. FdEF

    FdEF Light Load Member

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    Dec 5, 2017
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    How could it be the ecm when you were blowing bubbles? I'm curious how that could be
     
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