CM871 code 2973

[Rawze]

It is not unusual for a delete program to disable the crank case filter... that in itself will not cause harm on its own, as long at the truck owner is aware if it and the cc filter is properly dealt with ... BUT!!!-- The person doing that job should have well informed the truck owner(you) to either drill out that CC filter, perhaps like shown in the link I provided,... OR HAVE TOLD YOU TO use the cummins maint-free filter, as the maint.free one (link: http://rawze.com/forums/showthread.php?t...50#pid8950 ) from cummins is simply a drilled out housing with no element in it.

because ... <- A CLOGGED CC FILTER CAN DEFINITELY CAUSE TURBOCHARGER FAILURES! among many other problems like the engine brake harness bleeding oil, various gaskets, covers, seals, etc. leaking and bleeding oil, and several other issues related to too much pressure in the enigne under its valve cover as it build up.

As far as the EGR cooler blocked off,.. there is nothing wrong with stopping the exhaust gas flow through it (assuming you live in a country that allows such mods), but NEVER IMPEDE THE COOLANT FLOW through it. Hopefully the coolant flow through it has not been blocked or altered. Biggest issue that i see people do when blocking exhaust flow between the exhaust manifold and the egr cooler though, is that they use a blocking-plate they got off the internet and IT IS NOT THICK ENOUGH to hold back the 80 - 90 PSI+ of hot exhaust gas pressures behind it for long periods of time (many years), and they break apart, or get etched through, or corroded, and many other issues. <- If it break apart/cracks under these kinds of stresses, then the pieces will go through the turbocharger, destroying it. <- nothing to play with.
That plate should be at least as thick as a person's thumb, and made out of no less than 304-grade stainless, or it will eventually fail. Here is further discussion on this, that also shows an example of a decent one at the end of the thread ... http://rawze.com/forums/showthread.php?t...7#pid25737