Help! Cummins Isx CM871 Programming

[mxmom777]

I just checked the invoice and it indicates reset DPF Maintenance.

The turbo speed fluctuates between 38-56,000rpm when it tries to regen. When the engine fan kicks on the regen aborts. There's no codes.

(02-04-2023 )mxmom777 Wrote:  

(02-03-2023 )Rawze Wrote:  

(02-02-2023 )mxmom777 Wrote:  So replaced DPF cleaned DOC and many other parts/sensors. Still not allowing full regen to take place. Swapped ecm with one from an international. other than all lights on it completed the regen. Flashed the international ecm with the Kenworth program on the ecm with the latest update and trucks not completing regen cycle again. Clearly it’s an[/font] issue or bug with Cummins programming! Any suggestions?

First ...make sure the program is the exact one that is made for that engine ser# and truck.


next.. It is NOT a software bug. There is a soot (estimate) counter in the ecm that only counts UP and never down. It does NOT get reset magically just by someone replacing or cleaning out the DPF, DOC, etc. It has to be done as a procedure, as part of the "DPF replacement procedure" in cummins insite software. If this was not done properly when everything was removed and cleaned. etc.. then you will fight it to no avail.

lastly, if the regen cancels itself prematurely, then there is a reason for it. Wrong exhaust temps or could not get hot enough, turbo position error, or turbo rpm too fast or slow vs the engine, coolant temp, or some other thing that it red flagged.