2003 ISC 8.3 in RV with bad ECM

[Rawze]

(01-10-2026 )dwcjwerfner Wrote:  I am an IT guy and I am surprised how everyone even figures their way through the all of this crappy software.
Most of my problem is I believe because I am trying to deal with a 23 year old ECM that Cummins doesn't care about anymore.

So my l ECM is a CM554, C T only has ISB and QSB/C modules listed for that product, so I can't do the backup. And actually no listings at all for ISC.
The ECM code is J91051.18 which is an ENC code and again the only ENC is for the ISB

I don't think I can put pictures here to show.

Also a FYI for anyone else. I downloaded and went through every single DVD that was released in December 2025 and the J91051 is no longer on them. I was looking to make sure I was putting on the newest calibration. That is what you referred to as them deleting older cals I guess.
Good thing I have the 2022 DVD's.

Sorry, forgot to reply, no it is not de-mandated. It is pre def, pre egr and pre dpf. Just a crappy fuel injection system.

are you only using only one eye, half closed, to look at this stuffs?... maybe did not look hard enough? ... Maybe your PC screen has a huge crack, obscuring half of what you see??

... I am looking right at the J91051 file right off of the 2025 Incal DVD collection...

(right click/view image for better detail).

== I am also starring right at the 'ENC' product selection screen in CT... so there again.. maybe the sun glasses are too dark?.

(right click/view image for better detail).

This stuffs is pretty straight forward for people who are good with a PC (as you have claimed to be) ... Maybe get with that IT school and ask them for your moneys back?.

Anyhow ... since it is not de-mandated, then you don't even need to copy the file out of the old ECM. The file in old ecm is possibly many years old and out of date any ways. - Just make a work order/template using Insite if you can, then install the new program from incal and restore the work order/template. - If you can't then simply take it to a chrisler stearlersh%it and have them do it with the Christler software. - The programs are still available.