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Automatic Regen too often

I got mine done in January this year. I called to see where I was on the list and the SM asked if I could be there the next morning, checked with parts and gave them my VIN and made my appointment. Took maybe 45 minutes.

Has made no difference whatsoever in regen frequency.
 
Sorry for this stupid question and please send me to the correct spot but I could not find where to ask this question.
What is the best diagnostic tool that can scan and calibrate etc anything on these vehicles? Please.
 
Update on my 19 2500 6.7. Threw in a new mopar maf sensor with the China stamp on it. Truck had the Germany stamped sensor. So far I've made it 40 miles on intown traffic. Dpf is at 5grams of soot which equals just over 25% on the dpf gauge. The new sensor was installed immediately after the last regen which left the truck at 1G of soot. The issue is the truck jumps from 2G to 5G in the matter of miles. The plan is to throw atleast 100 miles on the new maf sensor before taking the truck back to the dealer.

Planning on borescoping the dpf filter this week to inspect it
 
Xrs_800 said:
Update on my 19 2500 6.7. Threw in a new mopar maf sensor with the China stamp on it. Truck had the Germany stamped sensor. So far I've made it 40 miles on intown traffic. Dpf is at 5grams of soot which equals just over 25% on the dpf gauge. The new sensor was installed immediately after the last regen which left the truck at 1G of soot. The issue is the truck jumps from 2G to 5G in the matter of miles. The plan is to throw atleast 100 miles on the new maf sensor before taking the truck back to the dealer.

Planning on borescoping the dpf filter this week to inspect it
Click to expand...
What do you attribute to the rapid increase from 2G to 5G in such minimal miles? Algorithmic error in the estimated soot load, a faulty reading from the differential pressure sensors, or an upstream error causing excessive soot loading under certain conditions?
 
mbarber84 said:
What do you attribute to the rapid increase from 2G to 5G in such minimal miles? Algorithmic error in the estimated soot load, a faulty reading from the differential pressure sensors, or an upstream error causing excessive soot loading under certain conditions?
Click to expand...
The $100,000 question.
 
mbarber84 said:
Definitely.

I’ve seen my % REG pid make some wildly fast increases in certain situations without any idea why. I will say that behavior has decreased markedly now that I’ve been using the archoil.
Click to expand...
The Archoil has definitely helped mine also. I’ve been trying to keep the rpm up on mine when running slow or in town. I know it lowers EGT’s but it increases the amount of air going through the engine compared to the amount of fuel required. Grasping at straws.
 
OLEJOE said:
The Archoil has definitely helped mine also. I’ve been trying to keep the rpm up on mine when running slow or in town. I know it lowers EGT’s but it increases the amount of air going through the engine compared to the amount of fuel required. Grasping at straws.
Click to expand...

I have noticed that the sensor seems to like more airflow, but passive regen doesn’t. Double edged sword…
 
mbarber84 said:
What do you attribute to the rapid increase from 2G to 5G in such minimal miles? Algorithmic error in the estimated soot load, a faulty reading from the differential pressure sensors, or an upstream error causing excessive soot loading under certain conditions?
Click to expand...
I'm going with a faulty reading. The jump is exponential when looking at the graph. This is all intown driving with decent to heavy acceleration. So far it does not matter if you drive the truck like a grandma on the way to church or like a bat out of hell.

I've inspected the boast hoses, swapped afe and mopar factory intakes, and mopar intake filters with a known good truck.

The challenge is getting this truck to a dealer. The shop is 40miles down i80. The truck regens and arrives with an empty dpf at the dealer. This makes there job hard due to they have no where to start besides drive the truck aimlessly around at a very high shop labor rate. Next trip out I'll go for a ride with it to fill it up
 
mbarber84 said:
Definitely.

I’ve seen my % REG pid make some wildly fast increases in certain situations without any idea why. I will say that behavior has decreased markedly now that I’ve been using the archoil.
Click to expand...
I noticed some jumping around in the 80-95% range before the soot load regen. It seemed like when I was driving it low load, lower speed it has trouble exactly measuring the soot load since the exhaust flow rate is low through the dpf. Once I put a load on it and got the rpm up the % seemed to jump up once it got a more accurate reading from the differential pressure sensor
 
the Archoil cleaner has made a huge difference on mine, I know my use of the truck isn't best, but it would regen every 2-3 days, about 4 times within a tank of fuel. Now i haven't had a single regen on this tank that is almost finished.
 
I’m currently at 823 miles and 17 engine hours since last regen. Roughly 150 miles of that is towing a trailer with a farm tractor on it (total of 33k gross) and then another 300 miles of towing an empty trailer (19.5k gross) at 70-75mph. Fuel has been consistently treated with archoil 6500 at the 2oz per 10 gallon dosage. DPF is at 0% on the dash and the banks pid is showing about 70% or so.
 
This is interesting and cant stop reading. I know my truck is new but covered 4380km since I picked her up last Thursday and knew about this before picking her up and kept a close eye on my DPF. I picked her up with the level up to the first line and not sure when the regen happened but was at zero within the first hour after driving and up to now has never been more than zero ever since. This week I drove short trips the truck gets driven in and out the workshop everyday and we went for a coffee and pie in Goulburn today, thats a 180km eish round trip and still zero.
 
T143 said:
This is interesting and cant stop reading. I know my truck is new but covered 4380km since I picked her up last Thursday and knew about this before picking her up and kept a close eye on my DPF. I picked her up with the level up to the first line and not sure when the regen happened but was at zero within the first hour after driving and up to now has never been more than zero ever since. This week I drove short trips the truck gets driven in and out the workshop everyday and we went for a coffee and pie in Goulburn today, thats a 180km eish round trip and still zero.
Click to expand...

You likely experienced passive regen to drop it back to 0% and longer drives will help keep it there.
 
I'm at about 900 miles and 15 hours since my dpf was replaced. Gone through about 2 tanks (3 fill ups but first 2 were 3/8 left on my trip to and from Kansas). This 3rd fill up has the archoil 6400d. I have soot register up to about 12.5% two times on the EVIC but it passive regened after about 15 minutes on the highway. Those readings only popped up after several short 10 minute 65mph commutes to the store and back. I should be on track for a 24 hour regen around the 1300 mile mark. If I make it that far it will be the first time in over a year that has happened. Regardless it has been a year since I was even able to go through just 1 tank of fuel without a regen. Which was still better then what you guys have read about my truck the last few months I had it which was about 8-10 regens per tank (smaller 31 gallon tank)
 
Screenshot_20240729_122437_AlfaOBD.jpg

Here's my DPF soot guage after 5miles of driving. As you can see how erratic the line is. The truck starts up at 6G. Driving 35mph for a 2 mins. Hit the on ramp, race up to 70. Drops to 4G. Cruise set at 75 spikes to 5G then to 6G of soot, then regen. 150miles since last regen. Hits 6G of soot and regens.

Finally had some time today and check all boast clamps and hoses. All were tight and no obvious leaks or damage. Next according to P2459 code sheet is check the exhaust. No leaks or lose clamps were found.

I separated the flex tube right before the DOC and DPF just enough to slide a borescope in. The DOC is not face plugged and clean. Next pulled the DEF injector and looked at the outlet of the DPF and Cats. Both are perfectly clean and no damage to the mesh or black spots.

Lastly pulled the differential pressure hoses and sensor. Hoses are clean inside and no blockages. No leaks or tears were found.

Ordered a new differential pressure sensor today to throw in. According to all data the differential pressure sensor monitors the flow rate between the DOC and DPF to calculate the soot level. With my erratic drops and rises I'm assuming this has to be it.Screenshot_20240729_152124_Endoscope Camera.jpg
DOC FACE ^ Screenshot_20240729_152109_Endoscope Camera.jpg

DOC face

Screenshot_20240729_153808_Endoscope Camera.jpg
DPF outlet

Screenshot_20240729_153904_Endoscope Camera.jpg

DPF outlet

Screenshot_20240729_153701_Endoscope Camera.jpg
Cats^ inlet 20240729_153923.jpg
DEF injector
 
Took my truck into the dealer yesterday to have the y43 recall addressed along with the "service exhaust system, see dealer" message I received last week. The CEL went away the day after it showed up but I wanted them to address it anyway. The service manager said the Y43 recall was what caused the CEL in the first place and that now that I have the Y43 PM sensor addressed the issue is gone.

This doesn't check out IMO since my truck has never had the second PM sensor and had not previously had a CEL for the exhaust system. My truck has not received any flashes or updates so this sounds like a cop out to me and likely didnt address the actual issue that caused the CEL and the more frequent regens that my truck has been going through. Im not holding my breath that this fixed anything but we shall see.
 
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