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DDEC 3 to DDEC 4, swap?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Ironwolf, Aug 12, 2018.

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  1. Aug 12, 2018 #1
    Ironwolf

    Ironwolf Bobtail Member

    4
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    Aug 12, 2018
    Burlington, ,NC
    0
    So I have a October 1994 built DDEC 3 379 EXHD. Nicest truck ive owned First Detroit .Normally been a Cummins and have owned two CATS .Really impressed with it. Better economy and quiet . I've done my research and see where DDEC 4 is better economy and power capable . What would be involved in swapping to DDEC 4 And was looking at the 14l DDEC 4 if I can find one reasonable. Any words of advice?
     
    Ironwolf, Aug 12, 2018
    Ironwolf, Aug 12, 2018
    #1
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  3. Aug 12, 2018 #2
    uncleal13

    uncleal13 Road Train Member

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    Humboldt, Sk
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    As far as I recall , you just change the ecm, or maybe it was just reprogram it.
     
    uncleal13, Aug 12, 2018
    uncleal13, Aug 12, 2018
    #2
  4. Aug 12, 2018 #3
    Working2party

    Working2party Medium Load Member

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    Feb 10, 2018
    Kansas
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    If I’m remembering correctly, the DDEC 3 was still considered a ECM, has 4 plugs and comunicated with the cab controls with a small control box and comunicated on the J1939 circuit (protocol). The DDEC 4 has a MCM with 120 pin connector (engine side harness) and a 21 pin connector (truck side) and communicates to the cab to a CPC over the CAN curcuit.
    I’m sure a person can exchange a DDEC 3 for a 4, but they’ll need to be able to read a wire schematic
     
    Working2party, Aug 12, 2018
    Working2party, Aug 12, 2018
    #3
    Jammer' and Oldironfan Thank this.
  5. Aug 13, 2018 #4
    Ironwolf

    Ironwolf Bobtail Member

    4
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    Aug 12, 2018
    Burlington, ,NC
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    That's fine .I was just hoping it wasn't a rewire the cab to control and receive the data.
     
    Ironwolf, Aug 13, 2018
    Ironwolf, Aug 13, 2018
    #4
  7. Aug 13, 2018 #5
    Ironwolf

    Ironwolf Bobtail Member

    4
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    Aug 12, 2018
    Burlington, ,NC
    0
    If that is the case does anyone have the serial for the non egr 14l? I've seen 6 with holes in the block but never thought about grabbing the sn for future use.
     
    Ironwolf, Aug 13, 2018
    Ironwolf, Aug 13, 2018
    #5
  8. Aug 13, 2018 #6
    spsauerland

    spsauerland Road Train Member

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    May 31, 2010
    West Harrison, In
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    Pretty sure DDEC 4 is replacement ECM for a DDEC 3 from Detroit with calibration for DDEC 3.
     
    spsauerland, Aug 13, 2018
    spsauerland, Aug 13, 2018
    #6
    Jammer' and pushbroom Thank this.
  9. Aug 13, 2018 #7
    Peterbiltt

    Peterbiltt Light Load Member

    236
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    Aug 21, 2014
    Ontario Canada
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    @swaan has a non egr 14L in his glider
     
    Peterbiltt, Aug 13, 2018
    Peterbiltt, Aug 13, 2018
    #7
  10. Aug 13, 2018 #8
    swaan

    swaan Road Train Member

    2,942
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    Jul 12, 2009
    BC canada
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    Detroit Hk60 14L
    Serial # 06RE142873

    Here you go.
     
    swaan, Aug 13, 2018
    swaan, Aug 13, 2018
    #8
  11. Aug 13, 2018 #9
    swaan

    swaan Road Train Member

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    BC canada
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    Diesel control service . His name is Fernando.

    He can convert and tune your ddec3 into a ddec4. And when you get it back you wont have any problems. The guy is a wizard.
     
    swaan, Aug 13, 2018
    swaan, Aug 13, 2018
    #9
  12. Aug 13, 2018 #10
    Oldironfan

    Oldironfan Road Train Member

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    I doubt that. It was probably deleted. You better have a fat bank roll for a factory non egr engine. If you are wondering how much don't ask.
     
    Oldironfan, Aug 13, 2018
    Oldironfan, Aug 13, 2018
    #10
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