SPN 641 FMI 9

[Rawze]

=- Priority one would be to pull a copy of the program out of that engine and e-mail it to me for review. Someone has to be an idiot if they think for one damn minute that they should be trusting that programming "out of some unknown place in Texas" .. and if your getting ready to retire then you should fix it so that the next person does not end up with YOUR headache! >>>> AS THERE IS NO EXCUSE TO RUN AROUND WITH SAND IN YOUR OIL AND HOPING FOR THE BEST... because that is exactly what your likely doing!.

NEXT: its a damn CM2250... the files are public and free to fix the programming properly if you have an adapter and a laptop!... there is no excuse for it!!!.. plain and simple!

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With unknown quality delete programming.. that very well may be a big part of your problems... but who knows for sure at this point. Just because it might have seem to worked somewhat ok to you for a while does not mean it will stay that way... or has ever been right.


NEXT: IF THOSE MORONS AT THAT DELETE SHOP HAVE UNPLUGGED THE ENTIRE HARNESS FOR THE DPF SYSTEM UNDER THE TRUCK... THIS MAY BE A BIG PART OF YOUR ISSUES TOO!. Get yourself an OHM-Meter and measure the resistance (keys-witch off) of the yellow and green twisted pair wires out at the engine harness 3-pin triangle-shaped J1939 connector (Can-Bus#2) located on the drivers side. It is called the "weather-Pack" connector in this photo...




... and see if it is roughly 60-ohms, or 120-ohms, or something higher! (key-switch off). Also, Crawl under your truck and see if the main harness going to the SCR/DPF, etc. controller is unplugged somewhere.

THE Can-bus#2 is the one used for the turbo actuator and other engine hardware. It requires 2 terminating resisotrs to prevent noise and problems with communications. One of the terminating resistors is in the turbo actuator itself on an ISX ... and the other is usually located down under the truck at the DEF controller or at a NOx sensor at the other end, this especially the case for CM2250 trucks that have that second DEF controller.

Don't give your truck an excuse to act up out of nowhere... check things properly.. FIX ANY HALF-ARSSED DELETE PROGRAMMING,... etc. and verify that the J1939 cab-bus#2 is proper and that the terminating resistors are both in place. Otherwise, your doing nothing but piS#ing up-wind.

In fact, I had someone not 3 days ago who said they had their entire harness unplugged from the "delete shop" and after a while, developed this same type of errors.. only to find that one of the J!939 terminating resistors in the network WAS MISSING because the s$it was unplugged. On theirs in fact, the whole harness cut/lopped off under the passenger side of their truck and plugs just hanging there.


- I can lead the horse to water... but some of ppl here lately do not want to hear reality and listen ... Which one are you going to be?.