Detroit 60 Series DDEC

Thanks, i will definitely try that (the additional ground).

I'll start researching ECMs. Am I limited to 11.1L donors? Or can i grab any Dd3 or dd4 no matter of engine size?

Thanks
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Update: added another ground (engine to battery) and corrected a jenky connection from the ECM to the positive side of the battery, still have the dreaded check engine light.

I've started looking for replacement ECMs but I'm not sure which generations will plug and play. Would appreciate any help on that. Thanks

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@Big Road Skateboard I'm in Indiana - Of course nothing is plug and play (why would it be? LOL)

What's involved in swapping out the others?

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@Big Road Skateboard I hear you, working on getting a reader. Can I use an ECM that's the same generation (DDEC 2) but from one of the other motors (12.7 or 14)?

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@MAMservices: man, you know I haven't figured anything out by now (I'm working on a 22 year old truck with a computer from the Flintstones era, yeah I got it all figured out! LOL)

I'm looking into another ECM, hopefully I can correct the issue because (when it wants to), the truck runs great.

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Good news - was able to make use of a pro-link set up, deleted all the historic codes. drove around for a while and dreaded light came back on. it is a single code for the fuel temp sensor. will be replacing that soon. So far (fingers crossed) no power loss. Either way, at least I have something to grab onto and work through.

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