Isx15 randomly shutting down

[Rawze]

(05-03-2026 )redtop23 Wrote:  A shop in Atlanta about 6 years ago. I'v taken a few trucks to them after this one as well. Paid top dollar for what I was told a good program, never had issues for all these years and engine/abs codes did show up and we quickly addressed them.
I'll have to talk to the shop if they let me get a copy, doubt they will..

The High pressure pump was rebuilt with new superseded parts at around 600k.

More then 90%+ of all de-mandate programming is harmful to the engine and/or turbo over time, and typically has a lot of faults hidden/disabled that have nothing to do with the emissions components themselves. - Most of these yahoos doing that stuffs resort to disabling a bunch of faults (including important engine faults) instead of shutting anything down properly. It makes the engine very difficult to troubleshoot and/or solve issues until something major breaks.

It does not matter what you think about the programming ... it needs to be reviewed properly. Bad programming does damage progressively over time, all while the truck owner swears there is nothing wrong. - Denial is the bane of bad deletes and the people who become the victim of it long term.

Also, like others have said.. poorly done / bad delete programming is notorious also for hiding faults that would otherwise make issues like the engine dying, power and turbo issues, etc. , making it far more difficult to know if there is even an issue, nonetheless can find it. So at the very least... Having any custom programming properly reviewed would be the place to start with it regardless.

At the very least, if it was done properly, then you will know for sure instead of speculating blindly about it. Then, you can also move onward towards finding its issues.

Copy the program from the ECM and e-mail it to me for a proper review of what someone did in there.
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