Cat c13 ecm replace issue

Discussion in 'Trucks [ Eighteen Wheelers ]' started by Garry Sahota, Jul 14, 2020.

  1. Garry Sahota

    Garry Sahota Bobtail Member

    37
    4
    Oct 6, 2015
    Brampton, Canada
    0
    Hello guys

    my cat c13 KCB 2007 ecm got bad. I ended up replacing it with same series engine ecm from Kenworth (same year as mine Kenworth)

    I didn’t get it reprogramed , my engine now goes at 65mph at 1300 rpm before it goes at 1400 rpm.

    my question is should i reprogram it from cat or leave it as it is , i have no other issues, everuthing is working.

    only thing i feel is less rpm makes it little hard to pull hills.

    thanks
     
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  3. pushbroom

    pushbroom Road Train Member

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    Sep 1, 2012
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    All it is is a simple parameter change. Should be able to get it done in under a half hour easy
     
  4. Garry Sahota

    Garry Sahota Bobtail Member

    37
    4
    Oct 6, 2015
    Brampton, Canada
    0
    Cat is asking $400 to reprogram whole ecm to my vin. I am curious like if i leave it like as it now (low rpms) is that any problem to engine or any other issues?
     
  5. gerardo1961

    gerardo1961 Road Train Member

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    Feb 21, 2010
    miami
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    When i change my ecm for my c 13 kcb was with reprogram never have a problem now 1501000 milles without rebuild
     
  6. AModelCat

    AModelCat Road Train Member

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    70,543
    Jul 7, 2015
    Edmonton
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    Your engine isn't running at a lower RPM. Your tach is getting the wrong info from the ECM due to wrong parameters being programmed into the ECM.

    As for negative long term effects, could be possible.
     
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  7. magoo68

    magoo68 Road Train Member

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    Jun 11, 2011
    st malo mb canada
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    Check your speed against a gps I’d guess your only doing 60 or61 instead of 65 until you change tire or gear settings in ecm
     
    Garry Sahota and AModelCat Thank this.
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