3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

P2149 Code > Injector Wiring Harness Upgrade or Update? I don't know what I'm doing

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Old May 14, 2020 | 07:39 PM
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P2149 Code > Injector Wiring Harness Upgrade or Update? I don't know what I'm doing

I popped a P2149, Truck has done this before a year ago and it was an injector solenoid that had failed. Thinking it was the same this time, I opened up the valve cover and Ohm'd them all. 0.7 Ohms, each and every one...

After consulting my injector builder and engine builder, they both say to replace the injector harness with the new style. Maybe I'm rusty for not having searched this forum in quite sometime, man I used to be good back in the day I swear. I digress.

What I need is I the Cummins part number that will unlock the mystery of what I need to replace. Is it just the gaskets? I see there are kits out there with harnesses, but I cannot locate one for my 2005, with the three connectors. Can some old salty dog out there help out the 'ol 2-Stroke?

Thank you!
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Old May 14, 2020 | 09:52 PM
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Ok, I think I found the Cummins number: 3966805. Looks like a simple replacement that has some extra wire loom at the connector. I was thinking I needed to replace it all like the newer 07+ trucks.
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