Automatic Regen too often

[oledirteh]

Interesting, makes me think they changed the injection timing to help with passive regen when the DPF has some accumulation.

Do you notice the mpg’s drop when the EGT’s get above 700°?

18-19.5 mpg wasn’t great for passive regen on the ‘22, but it also wasn’t quite that cool on EGT’s.

to be honest havnt watched the mpg's like i did on 21 6.7 SO. the 21 got about 21mpg but the 24 is alot more truck so i just stopped looking. ill pull up the lieometer and see what its stating

 

[OLEJOE]

My 22’ doesn’t run quite that high on the top end and higher on the low end. Most I see for egt3 is 640-650 then it drops to 580-590 at 75 mph. I have 5 miles of 35-55 then 15 miles at 75. Running the 2/10 6500 Archoil and I don’t remember when was the last time I saw the DPF gauge off of zero.

 

[cfav]

Last year I was seeing frequent regens. Then landed a new job in September which has me commuting 1hr each way. With archoil cleaner/each tank additive, I was getting 24hr regens like clockwork. Then all of the sudden it started short regens again with odd ups and downs on the DPF soot load in between regens .... Then it threw a P2002. Swapped the PM sensor, ran the cleaner again timed with the next regen and it's been on zero ever since. It's at 17hrs-ish now.

Did you happen to have a sooty tail pipe caused by this? Im Rolling coal with a p2002 code. Dealer is trying the PM sensor first and it’s backordered. Been 20 days since they ordered it….

 

[oledirteh]

so yesterday was harder to keep speed like a normaly do due to weather.

but this was yesterday afternoon





Then this morning on my commute.



Hard to get a focued pic.

when i left the house i had 0 on the dpf. 10 miles in it went to 10% or so. my regen will hit near the house today, or on my way into work tomorrow. likely tomorrow.

 

[AH64ID]

so yesterday was harder to keep speed like a normaly do due to weather.

but this was yesterday afternoon
View attachment 86191

View attachment 86193


Then this morning on my commute.

View attachment 86194

Hard to get a focued pic.

when i left the house i had 0 on the dpf. 10 miles in it went to 10% or so. my regen will hit near the house today, or on my way into work tomorrow. likely tomorrow.

Definitely lower than I usually saw, but your average mpg is a little better so it’s likely just attributed to that. Certainly not much passive regen going on with temps that low.

 

[oledirteh]

Definitely lower than I usually saw, but your average mpg is a little better so it’s likely just attributed to that. Certainly not much passive regen going on with temps that low.

anything over 80MPH and i hit 700 degrees across the board. also the torque block on the gauge when im cruising thats ussualy around 25-30. once i hit 50-60 is when temps rise but unless im on it that above pics are my average.

Idle it sits between 350-430

 

[flan]

Did you happen to have a sooty tail pipe caused by this? Im Rolling coal with a p2002 code. Dealer is trying the PM sensor first and it’s backordered. Been 20 days since they ordered it….

If you’re rolling coal or have a sooty pipe you’re going to need more than a PM sensor that’s for sure.

 

[Greg10yes]

Truck ran another regen today, about 200 miles and 5 hours after the last one. I am hoping to buy a scanner tool so I can see what is going on with my truck. I tried searching for OBD and that is too short of a search tool. Found a longer way and found V-gate vLinker MC+ OBDII Bluetooth Adapter Car Wireless OBD2 Scanner,

I also want to change fuel tank size (putting in an OEM 50 tank) etc. Do I need other cables? I have seen mention of a security bypass cable.

Thanks for the help.

 

[OLEJOE]

Truck ran another regen today, about 200 miles and 5 hours after the last one. I am hoping to buy a scanner tool so I can see what is going on with my truck. I tried searching for OBD and that is too short of a search tool. Found a longer way and found V-gate vLinker MC+ OBDII Bluetooth Adapter Car Wireless OBD2 Scanner,

I also want to change fuel tank size (putting in an OEM 50 tank) etc. Do I need other cables? I have seen mention of a security bypass cable.

Thanks for the help.

Yes you will need the bypass cable. I have the KaodTech bypass cable that plugs into the 2 Canbus blocks under the dash behind the headlight switch. On my truck, I have found that I can remove the small dash panel under the headlight switch and I can see where the bypass cables plug in and makes it easier.

https://www.

kaodtech.com/product

 

[FieldKr]

Still racking my brain here, but I have noticed recently that the gauge goes crazy when I'm under 12 hours since last regen. If the timer can reach 12 hours everything settles out and estimated soot load drops significantly. I will then hit the 24hr mark. Nothing changes in drive habit, fuel station used, or anything other than ambient temp. Which temps now are warm and humid. At this point its either one of the sensor randomly spazzing (which i can't see in graphing) or tuning of some sort is the only real solution.

Any one else notice something similar?

 

[Ostracize]

Still racking my brain here, but I have noticed recently that the gauge goes crazy when I'm under 12 hours since last regen. If the timer can reach 12 hours everything settles out and estimated soot load drops significantly. I will then hit the 24hr mark. Nothing changes in drive habit, fuel station used, or anything other than ambient temp. Which temps now are warm and humid. At this point its either one of the sensor randomly spazzing (which i can't see in graphing) or tuning of some sort is the only real solution.

Any one else notice something similar?

Many many other potential culprits... But with mine, it was doing similar to what you describe and was found to be a leaking gasket on the motor side of the DPF assembly.

 

[FieldKr]

Many many other potential culprits... But with mine, it was doing similar to what you describe and was found to be a leaking gasket on the motor side of the DPF assembly.

I’ll check the gaskets. I know there are no issues in the engine area. It just doesn’t make sense that it behaves normal as soon as the run time hits 12 hours. It seems if it was gasket it would wig out the whole time, and show up on monitoring of parameters.

 

[AH64ID]

I’ll check the gaskets. I know there are no issues in the engine area. It just doesn’t make sense that it behaves normal as soon as the run time hits 12 hours. It seems if it was gasket it would wig out the whole time, and show up on monitoring of parameters.

Just to clarify, is this on the dash gauge or an OBDII monitor?

 

[FieldKr]

Just to clarify, is this on the dash gauge or an OBDII monitor?

It is on the both dash gauge, and the OBD monitors. Once it hits the 12 hour run time mark the OBD monitors (dpf pressures and air flow monitors) stabilize and don't jump around. Then the dpf cluster gauge will drop significantly in about 15min of driving. These are drive cycles without towing but 80% interstate. I have gone down the Tsb and done everything on it except replace dpf. I pulled the map and map sensor recently and both were clean. They were last checked 30k miles ago. Oil level stays at middle of dip stick every 7500 miles for oil changes, no coolant loss, no signs of air leaks.

Just for the sake of it I may just throw a new PM sensor on it since its not expensive.

 

[AH64ID]

It is on the both dash gauge, and the OBD monitors. Once it hits the 12 hour run time mark the OBD monitors (dpf pressures and air flow monitors) stabilize and don't jump around. Then the dpf cluster gauge will drop significantly in about 15min of driving. These are drive cycles without towing but 80% interstate. I have gone down the Tsb and done everything on it except replace dpf. I pulled the map and map sensor recently and both were clean. They were last checked 30k miles ago. Oil level stays at middle of dip stick every 7500 miles for oil changes, no coolant loss, no signs of air leaks.

Just for the sake of it I may just throw a new PM sensor on it since its not expensive.

Fill out your signature so we know what truck you’re taking about.

The PID bouncing around the first 12 hours of operation since last regen is normal and expected. The PID is a combo of hours and soot loading, so the first 12 hours it’s back and forth between hours and soot loading. The soot estimation bounces around a lot, as you’re noticing. The hours are a steady increase and after 12 hours drive the PID when the driving style supports a 24 hour regen.

The PM sensor only monitors DPF heath and will not have any effect on the regen % PID.

Your description of operation sounds perfectly normal and I wouldn’t change a thing or spend money on anything.

 

[FieldKr]

Fill out your signature so we know what truck you’re taking about.

The PID bouncing around the first 12 hours of operation since last regen is normal and expected. The PID is a combo of hours and soot loading, so the first 12 hours it’s back and forth between hours and soot loading. The soot estimation bounces around a lot, as you’re noticing. The hours are a steady increase and after 12 hours drive the PID when the driving style supports a 24 hour regen.

The PM sensor only monitors DPF heath and will not have any effect on the regen % PID.

Your description of operation sounds perfectly normal and I wouldn’t change a thing or spend money on anything.

Yeah I understand the pid aspect, it shows the greater of the two between estimated soot or run time.

What I'm talking about is estimate soot load is all over the place. I have had one instance where from start Pid is in mid 20's, no reading on dash, and 1gl on the alpha old graph on start up. I drive easy 4 miles to the interstate, and then with in 10 min of driving at 75 it filled up and regened. Some days Pid jumps 30-35 percent in the drive in the morning, then mid afternoon restart its back to reading run time percentage at start and no increase driving same interstate run (35 miles up and down hill) in hot and humid afternoon. Other times no increase in the morning drive cycle, and loads in the after noon. Then times no change on either trip. All with same ambient temp and humidity, same fuel. It is not just the Soot monitoring that jumps around, it is also air flow readings from MAP, MAF, and DPF pressure that are erratic when soot reading wigs out. They are not consistent (extreme highs and lows, and i know they change with throttle increase and decrease)in readings like they are when I see no soot load. Once I get run time to hit 12 hours everything operates like clock work till a 24hr regen. After 12hr run time my estimate soot never gets above 3gl and 2 bumps on the dash when the 24hr regen hits.

I have Mopar filters all around from Genos, chinese maf (changed from german part 40k ago with relearn procedure). Mpg is always between 16.8 and 17.5 hand calculated every fill up.

I meant DPF pressure sensor not PM sensor to replace.

 

[Molonlabemike]

Just purchased a used 22 thats now regenning every 50 miles. Have a service appointment with Ram to get them to fix that issue, hood paint issues, uconnector error and a damn dash rattle. Damn rams!

ETA: Swapped out a fleetguard updated filter, cleaned my map sensor, fresh oil change and fresh fuel filters, and still no luck.

 

[22PearlRamMegaHD]

Just purchased a used 22 thats now regenning every 50 miles. Have a service appointment with Ram to get them to fix that issue, hood paint issues, uconnector error and a damn dash rattle. Damn rams!

ETA: Swapped out a fleetguard updated filter, cleaned my map sensor, fresh oil change and fresh fuel filters, and still no luck.

Take a look at your MAF. If it's made in Germany, swap for the made in China one. I went thru what your going thru. Took them 4 months to resolve. However, I think my resolution was temporary as the issue is likely in programming. I'm also of the belief it is the lack of cetane in fuels. Most stations sell basic stuff with 40-42 cetane. Needs to be closer to 48. The slower ignition is likely leading to incomplete burns which creates both more soot and reduced EGTs which make passive regen nearly impossible.

With that said I got a new maf. Solved nothing even tho it was the german one. Tried CCV, Air filter, DPF and much more from May to August last year before returning to me saying it was fixed. Since then, all but 1 regen was a 24 hour regen until April this year. I've had a couple 5 hour, 200 mile regens. After those two I dumped Archoil 6400D in the tank - went 450 miles and about 9 hours with no regens. Lately I've run Archoil 6500 at 3 oz per 10 gallons. I've had nothing register on the gauge since I had the two 5 hour 200 mile regens cycles with a return to the 24 hour timed regens.

With the above info I really do think it's a combination of programming and poor USA diesel cetane ratings cause the shooting issues. The 6400d and 6500 seemingly increase cetane (performance is much better, especially when you need to scoot in a hurry) while reducing the EGTs necessary for passive regen.

Hope this helps

 

[22PearlRamMegaHD]

Take a look at your MAF. If it's made in Germany, swap for the made in China one. I went thru what your going thru. Took them 4 months to resolve. However, I think my resolution was temporary as the issue is likely in programming. I'm also of the belief it is the lack of cetane in fuels. Most stations sell basic stuff with 40-42 cetane. Needs to be closer to 48. The slower ignition is likely leading to incomplete burns which creates both more soot and reduced EGTs which make passive regen nearly impossible.

With that said I got a new maf. Solved nothing even tho it was the german one. Tried CCV, Air filter, DPF and much more from May to August last year. All but 1 was a 24 hour regen until April this year. I've had a couple 5 hour, 200 mile regens. After those two I dumped Archoil 6400D in the tank - went 450 miles and about 9 hours with no regens. Lately I've run Archoil 6500 at 3 oz per 10 gallons. I've had nothing register on the gauge since I had the two 5 hour 200 mile regens cycles.

With the above info I really do think it's a combination of programming and poor USA diesel cetane ratings cause the shooting issues. The 6400d and 6500 seemingly increase cetane (performance is much better, especially when you need to scoot in a hurry) while reducing the EGTs necessary for passive regen.

Hope this helps

Side note - if you do the MAF yourself be sure to review the relearn procedure required after it's changed.

 

[Molonlabemike]

Side note - if you do the MAF yourself be sure to review the relearn procedure required after it's changed.

Take a look at your MAF. If it's made in Germany, swap for the made in China one. I went thru what your going thru. Took them 4 months to resolve. However, I think my resolution was temporary as the issue is likely in programming. I'm also of the belief it is the lack of cetane in fuels. Most stations sell basic stuff with 40-42 cetane. Needs to be closer to 48. The slower ignition is likely leading to incomplete burns which creates both more soot and reduced EGTs which make passive regen nearly impossible.

With that said I got a new maf. Solved nothing even tho it was the german one. Tried CCV, Air filter, DPF and much more from May to August last year before returning to me saying it was fixed. Since then, all but 1 regen was a 24 hour regen until April this year. I've had a couple 5 hour, 200 mile regens. After those two I dumped Archoil 6400D in the tank - went 450 miles and about 9 hours with no regens. Lately I've run Archoil 6500 at 3 oz per 10 gallons. I've had nothing register on the gauge since I had the two 5 hour 200 mile regens cycles with a return to the 24 hour timed regens.

With the above info I really do think it's a combination of programming and poor USA diesel cetane ratings cause the shooting issues. The 6400d and 6500 seemingly increase cetane (performance is much better, especially when you need to scoot in a hurry) while reducing the EGTs necessary for passive regen.

Hope this helps

Good info, thank you for that info. I’m new to diesel so I’ll be ok the look out to finding better stations to fuel up. I have an appointment on Wed for them to look at it. Service manager for the dealer is buddy of my dealers manager. He called him and he said it will most likely need a new DPF and once they get it they will figure it out. While it’s still under warranty I’ll let them throw parts at it because once I grow toed of it and weight reduction cost drop on the 22s I’ll just go down that road. So far I have 2 CEL for to many regens. We have a trip starting tomorrow to GA towing our trailer so it should be able to naturally regen as I tow. Time will tell.