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6NZ ECM

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by cgilliland, Oct 11, 2019.

  1. Oct 11, 2019 #1
    cgilliland

    cgilliland Medium Load Member

    321
    744
    Mar 13, 2017
    0
    I bought a '99 W900 that was N14 but swapped to 6NZ. It runs great but is governed at 72MPH. I took it to a local shop and they said they needed a password for the ECM. The seller doesn't have it. Does it sound right that a password is needed?
     
    cgilliland, Oct 11, 2019
    cgilliland, Oct 11, 2019
    #1
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  3. Oct 11, 2019 #2
    AModelCat

    AModelCat Road Train Member

    29,440
    161,880
    Jul 7, 2015
    Canuckistan
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    Off to the CAT house for you! If its a password set by a previous owner/fleet they should be able to erase it. If it needs factory passwords to alter that parameter, they can generate them.
     
    AModelCat, Oct 11, 2019
    AModelCat, Oct 11, 2019
    #2
    Oxbow, cgilliland and Goodysnap Thank this.
  4. Oct 11, 2019 #3
    spsauerland

    spsauerland Road Train Member

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    May 31, 2010
    West Harrison, In
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    Yes, they can be password protected. Plenty of folks that can get around that without trip to dealer.
     
    spsauerland, Oct 11, 2019
    spsauerland, Oct 11, 2019
    #3
    pushbroom, Oxbow, cgilliland and 1 other person Thank this.
  5. Oct 11, 2019 #4
    BoxCarKidd

    BoxCarKidd Road Train Member

    4,528
    6,587
    Aug 26, 2014
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    I here the Cat house installs low NOX tunes on everything that comes in. Oh just the latest updates. Is the true?
     
    BoxCarKidd, Oct 11, 2019
    BoxCarKidd, Oct 11, 2019
    #4
    Oxbow, Rideandrepair and cgilliland Thank this.
  7. Oct 16, 2019 #5
    Robert Stoddard

    Robert Stoddard Bobtail Member

    11
    1
    Oct 6, 2019
    0
    Good evening I have a 2006 Cummings ecm Voltage going in and out is reading correctly all fuses and relays are good check the ECM fuse and it is good the issue is I hooked my JPro software to the engine and it’s not reading the motor double checked everything all connections are good vehicle crank in that start in the computer is not picking up the engine? Had someone come with the Cummings software same thing? my Supervisors having to replace the ECM is there anything else I should be looking for?
     
    Robert Stoddard, Oct 16, 2019
    Robert Stoddard, Oct 16, 2019
    #5
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