CM871 poor power and fuel econ

[Grounded Pilot]

(04-11-2022 )JimT Wrote:  sounds like you have a real mess on your hands there. Owner should stop blaming cummins (as the manufacturer) for problems created by 3rd party shops screwing around and doing half arsed work.

Like rawze said, check out that programming. You could be chasing ghost problems or just be unaware of other faults/problems being hidden/suppressed by bad programming.

My thoughts as well, but the idea is already planted. But yes, this truck has been tore up from the floor up by some moron! It evidently had a Qualcomm at some point and they just cut and jammed that wiring behind the glove box. When I unplugged the connector to the wire bundle, my cab code disappeared. I’m not confident anything is correct on this truck atm!

   

“Spare” wiring I removed. About half still live and no cover on the exposed cut ends.