Well at least you got 300 miles from the fuel in the truck. Since that included some towing my take is it is not sucking fuel and also running normally. No clue why so many regenerations, especially if there was no change in programming.
My contacts with the dealer hinted an order for the pump would happen back on August 11th. Well that came and went with no return contact by the parts guy at the dealership. I have since called twice and left messages. NO response. going away for a week starting this Wednesday. Guess it will be at least two weeks before I can maybe go there again and figure out why I am not getting the new pump.
Appreciate the follow-up.
I've noticed my 2021 2500 Cummins has been noticeably regenerating more often than usual the last month. 2-3 times per tankful(I usually fill up at 1/4 tank) this last month.
But then we've had the 3rd rainiest August on record. It has rained almost every day since mid July, cold too. The humidity is very high, and soggy, take a shower and drip for an hour. And the regernations have increased. June was the 2nd driest and hottest month ever. I kind of liked that.
So I have a theory that damp, dank, soggy weather with high humidity, aka, water, is going into the Cummins intake, and has to go out the exhaust. Damp is damp, probably contributes to a faster loading.
BTW, my 6.7 will regen every time it hits 33.3% on the DPF gauge, every time. I've got that gauge on full time and watch it instead of the Lie-O-Meter, which is as useful as tits on a boar. A couple of weeks ago, it started a regen, and a new message popped up. With the DPF gauge well over 50% (I've never seen it that high, and yes it was raining much.), the message was to keep driving until done. I hit the hwy and drove for over 20 miles, and it finished out fine. However, we have not been out towing around Alaska as usual. Selling your home is such a damned pain in the ass. and we have been stuck here all summer but for one camping trip. But we are about to stumble across the finish line this week, close and get our money, and hit the road. Then my truck is going to get a good workout, it needs it. Short tripping a CTD, or any diesel, too much isn't good for them.
For what it's worth, my truck passily regens when towing the RV and load, usually over 7,000 lbs of total load, quite quickly too. A good thing, my 2017 Ecodiesel with the same load never passively regened.