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Thread: No power to ALDL

  1. #1

    Default No power to ALDL

    I am in the middle of a conversion on my '96 CK3500 from 7.4 gas to the LB7 duramax from an '03 2500hd. I have the engine mounted and "most" of the engine wires plugged in. I am at the point of filling fluids and seeing what happens when parts show up so I can get coolant in it. Something odd is going on in the fuel system, when I hooked up the batteries the injectors (maybe fuel pump?) started "buzzing" with the key off. It ran the battery down, after charging them up again I decided to try to pull codes to see if I could learn anything and the code reader will not power up, neither will the new fancy Edge CS tuner.
    Does anyone have any ideas what I forgot to plug in? Should I just start cranking when I get the Dex-cool in it to see what happens?

  2. #2
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    Check the lighter fuse.

    On a new project like this where plumbing leaks are possible I prefer to fill with water first so if I have to pop something apart it's less of a mess.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  3. #3

    Default

    Got the system filled (no leaks) the hum/ buzz quits when I pull the fuse marked ECMI or the relay for the EDU. Engine turns over and fires for 1-2 seconds then dies. No message center lights at all.
    '94 C/K2500 5.7 5speed

    '96 C/K 3500 Crew LB7 /Allison conversion (in progress)

  4. #4
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    The fire and die sounds like the anti theft. This will have to be nuked in the programming.
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

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