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I've watched the DPF gauge some. Mostly because threads like this shame me into it. So far, I can't find any reason to keep watching it.
As long as it’s working correctly.
My 17 was very similar in that it rarely regenerated aside from the time scheduled ones. I never had any aftermarket monitoring but learned to pick up on the regenerations just by sound and feel. It would be extremely enlightening to be able to compare the tuning, programming, and any hard parts between a previous generation truck and these current ones. I still feel like there were a lot of changes made that were regressive, rather than progressive.
My story is identical - first 7K miles no regen issues. I have used the same diesel fuel and HSS EDT additive on each fill-up - for the last 5K miles I can only get ~175 miles before an active regen if I am not towing - changed where I buy diesel and stopped the additive - no change in regen performance (on my 2nd tank of different fuel and additive). What a frustrating problem - and I have the MOPAR AB filter from Geno's. I really hope we figure this out
If you’re constantly towing with it, the DPF should stay at 0% almost continuously because the truck is working harder. That extra load results in higher EGT’s and higher temps inside the DPF which leads to passive regeneration. Passive regeneration burns the soot out without the truck having to initiate an active regeneration. Even if the gauge stays at 0%, after roughly 24 hours of engine run time, the system will trigger an active regeneration regardless of soot load. When this is initiated, There should be a message that says “automatic exhaust system regeneration in progress” when you scroll to the DPF screen.
Try running a few more tanks of better fuel through without any additive. My truck continues to improve since cutting out the additive and switching fuel sources.
Hey Matt, Can you give an example of "better fuel"? Are we talking name brand stuff like Chevron?
I guess I should’ve explained better huh? “Better fuel” is kinda vague isn’t it? Sorry.
Thanks, Matt!
Sorry it’s long-winded. Lots to try and explain there and I’m sure I’m missing some points. I’ve been through the wringer with this truck. I’m still not sure if it’s “fixed” completely but it has been improving. I also just had the EGR cooler replaced under warranty. The truck was slowly losing coolant and trace signs of it were in my engine oil.
Not too long-winded and at all, and thanks for taking the time. You and I, and I'm sure many others, are having the same experiences with these trucks. I really don't believe Ram/Stellantis will step up and make any of us right or whole, but simply piecemeal it until our warranties run out or we give up and go away. It's pretty sad what they've done to a once-cherished brand and loyal customer base.
I agree. The regen frequency problem is significant, and should be addressed. In my case, it seems like fuel quality and maybe additives were part of the problem. I’m reluctant to do anymore experimentation on fuel sources or additives because I seem to finally have the truck back on the mend. I’ve been informed from multiple sources that Ram is investigating the regen frequency issue at the engineering level. I sincerely hope they come up with some answers and solutions soon. I would agree that they’re definitely toying with a very loyal customer base. Not a good business move. Too concerned with making electric toy trucks that go 100 miles and need charged. Time to get serious and get their backbone customer segment taken care of.
