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Reman Ecm problems, misfiring, trying to plug the old one back in

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by B5love08, Sep 24, 2023.

Page 2 of 4
  1. Sep 25, 2023 #11
    B5love08

    B5love08 Light Load Member

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    Really? ######. Had truck for a year and they were like that when I bought it and never had problem. So what do I do now?
     
    B5love08, Sep 25, 2023
    B5love08, Sep 25, 2023
    #11
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  3. Sep 25, 2023 #12
    B5love08

    B5love08 Light Load Member

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    But if u can zoom into stock yellow ecm it looks like those exposed ends just plug and play. Not even the stock ecm has a threaded bolt and it just plugs into the extension coming off the yellow ecm
     
    B5love08, Sep 25, 2023
    B5love08, Sep 25, 2023
    #12
  4. Sep 25, 2023 #13
    AModelCat

    AModelCat Road Train Member

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    The part you're missing off your harness is stuck in the socket of the original ECM by the look of it. Compare the 2 side by side, you'll see what I mean.
     
    AModelCat, Sep 25, 2023
    AModelCat, Sep 25, 2023
    #13
    Bean Jr. and lester Thank this.
  5. Sep 25, 2023 #14
    Star Rider

    Star Rider Road Train Member

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    You are correct, part of the harness plug IS in the old ecm on both plugs.This is what the plug looks like when correctly removed.
     
    Last edited: Sep 25, 2023
    Star Rider, Sep 25, 2023
    Star Rider, Sep 25, 2023
    #14
  7. Sep 25, 2023 #15
    Star Rider

    Star Rider Road Train Member

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    upload_2023-9-25_9-4-24.jpeg
     
    Star Rider, Sep 25, 2023
    Star Rider, Sep 25, 2023
    #15
    lester and B5love08 Thank this.
  8. Sep 25, 2023 #16
    B5love08

    B5love08 Light Load Member

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    Ok I'll see if I can get needle nose pliers in there to pull piece out
     
    B5love08, Sep 25, 2023
    B5love08, Sep 25, 2023
    #16
    Bean Jr. Thanks this.
  9. Sep 25, 2023 #17
    B5love08

    B5love08 Light Load Member

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    I just reached inside the stock ecm and tried to yank on anything inside and nothing in coming out. That black sleeve attached to yellow ecm in held on pretty good. And there is nothing inside
     
    B5love08, Sep 25, 2023
    B5love08, Sep 25, 2023
    #17
  10. Sep 25, 2023 #18
    B5love08

    B5love08 Light Load Member

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    If you look at my most recent post. Meant to reply to you but replied to another gentleman
     
    B5love08, Sep 25, 2023
    B5love08, Sep 25, 2023
    #18
    Bean Jr. Thanks this.
  11. Sep 25, 2023 #19
    AModelCat

    AModelCat Road Train Member

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    That stud, is it actually a bolt that threads in from the ECM side of the plug? Hard to tell in the pictures but looks like it.

    If you stuck your harness into the new ECM looking like it does, there's a very good chance that is why it didn't run right.
     
    AModelCat, Sep 25, 2023
    AModelCat, Sep 25, 2023
    #19
  12. Sep 25, 2023 #20
    B5love08

    B5love08 Light Load Member

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    Are these the pictures ur referring too
     

    Attached Files:

    B5love08, Sep 25, 2023
    B5love08, Sep 25, 2023
    #20
    Bean Jr. Thanks this.
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