To delete or not to delete ?

nremtp143 wrote:

brulaz wrote:

It's rare to hear of a clogged EGR on a newer diesel with DEF and DPF. But on 10 year old systems, it's common.

There were early rumours that the 6.7 Cummins in the new RAM HD (2020?) would eliminate the EGR completely. But lately I've been reading that it will still be there.

That's what they keep saying, but here is my truck at 29K miles with a new turbo, EGR, EGR valve, waste gate and solenoid, but look at the EGR cooler core. This truck is rarely driven except when it has the Montana hooked to it. The core should be pristine. No codes or other problems. Just a hauler.
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Thanks, that's interesting.

No codes yet though? Guess it's still working well enough. And maybe it will keep on working well enough? There's hot shot guys with 100's of thousands of miles on the newer Cummins with no EGR issues.

And dunno if I would expect it to be "pristine". My 2016 RAM Cummins tailpipe is relatively pristine, much better than my old EcoBoost, but it's downstream of the DPF.

The old, clogged EGR valves I'm familiar with (from our 2006 Passat TDI, not a Cummins) were solid packed with soot. Much uglier.

If a person spends more time in stop-n-go and not hauling, I imagine there will be EGR (and DPF) problems. Have heard of these folks getting "DPF Full" messages and instructions to go on the highway and run it hot to help regeneration burn off the soot in the DPF. Dunno if that helps clean the EGR plumbing and cooler though ...