Automatic Regen too often

[John Jensen]

I believe its in this thread people have talked about them having issues before the sensor and continued to have issues after the sensor.

I can understand the issues before the sensor because the truck was delivered to compensate for no sensor. I understood that the compensation was more frequent regens. To have more frequent regens after the recall is what makes me wonder if the recall flash was faulty

 

[oledirteh]

i would ask the diesel tech at your local dealer if a new tune was used to adjust for the sensor. then report back as it may be helpful to others.

If my transmission comes in this week i can ask when i go in

 

[John Jensen]

i would ask the diesel tech at your local dealer if a new tune was used to adjust for the sensor. then report back as it may be helpful to others.

If my transmission comes in this week i can ask when i go in

My 2020 wasn't involved, won't be seeing my dealer unless I have a problem.
The recall included a flash for the sensor installation. I read the recall when it came out

 

[Nick]

When I start towing 15 k , if there is anything showing in the def gauge it will go to 0 in about 20 min and stay there as long as I am towing . I have traveled for months with little or nothing showing on the gauge .

 

[mr wayne]

Would it hurt to use the whole 12oz bottle of 6400d for 30 gals ?

 

[oledirteh]

Would it hurt to use the whole 12oz bottle of 6400d for 30 gals ?

thats what i did.

 

[OLEJOE]

thats what i did.

Me too.

 

[mbarber84]

Was it the 2022s that due to a shortage came without the SCR's particulate matter sensor? Didn't they come with a different regen software to compensate for not having that particulate matter sensor? Then, when those sensors were available they recalled trucks to install the sensor and flash the ECM to the correct regen software. If so, I wonder if that recall flash created the problem. Just wondering.

John the regen strategy is the same for all model years, including 2022. The PM sensor doesn’t control regeneration so there’s no need to have a different strategy. Regeneration has always been controlled by time or soot loading, and soot load values come from the differential pressure sensor which all trucks have. My truck demonstrated this odd behavior prior to having the Y43 recall performed, and then continued to do so after Y43 was completed. Nothing about the PM sensor installation or the associated PCM flash changed the behavior.

 

[mbarber84]

i would ask the diesel tech at your local dealer if a new tune was used to adjust for the sensor. then report back as it may be helpful to others.

If my transmission comes in this week i can ask when i go in

Asking the dealer techs anything about PCM flashes is pretty much futile because they’re not given any definitive information or details about what the flash does to the truck.

Taking these trucks to the dealership for regeneration issues is, in most cases, an exercise in futility. Most of the techs just follow the preprogrammed check list and it isn’t very helpful. If there’s no DTC active (like P2459) they basically walk around the truck and look at stuff and say “operating as designed”.

My truck has been back to my dealership twice because I complained that it isn’t functioning correctly and they shrug their heads. Despite a documented spreadsheet nearly a year old that clearly defines the odd behavior: I.E. - 6 months straight of 24 hour regen cycles followed by 6 months of erratic regen cycles, followed by more consistent 24 hour cycles etc.

There’s no way that kind of behavior is normal. Nor is it acceptable that “they” don’t have a good explanation as to why it’s doing what it’s doing.
“There’s no code” is not solid ground to stand on. I’ve documented a lot of these regen issue trucks that go less than 100 miles and regen, but no code is set.

 

[oledirteh]

Asking the dealer techs anything about PCM flashes is pretty much futile because they’re not given any definitive information or details about what the flash does to the truck.

Taking these trucks to the dealership for regeneration issues is, in most cases, an exercise in futility. Most of the techs just follow the preprogrammed check list and it isn’t very helpful. If there’s no DTC active (like P2459) they basically walk around the truck and look at stuff and say “operating as designed”.

My truck has been back to my dealership twice because I complained that it isn’t functioning correctly and they shrug their heads. Despite a documented spreadsheet nearly a year old that clearly defines the odd behavior: I.E. - 6 months straight of 24 hour regen cycles followed by 6 months of erratic regen cycles, followed by more consistent 24 hour cycles etc.

There’s no way that kind of behavior is normal. Nor is it acceptable that “they” don’t have a good explanation as to why it’s doing what it’s doing.
“There’s no code” is not solid ground to stand on. I’ve documented a lot of these regen issue trucks that go less than 100 miles and regen, but no code is set.

i agree, the no code stance is absolutely annoying.

 

[OLEJOE]

When I start towing 15 k , if there is anything showing in the def gauge it will go to 0 in about 20 min and stay there as long as I am towing . I have traveled for months with little or nothing showing on the gauge .

My DPF gauge was on 25% or 1/4 with 696 miles and 20 hours since my last regen. I decided to hook to the TT and clean it out. In less than 20 miles it was back to zero. Set the cruise on 63 mph in some rolling hills. To get it to passively regen empty, takes 50-60 miles at 75+ mph. I’m running 1.5 oz per 10 gallons with the 6500d right now. I probably could have made it to the 24 timed regen without the towing but I have some appointments and didn’t want to shut it down during a regen and have to start it over. I’m going with 2 oz per 10 next time and I’m going back to the Exxon fuel.

 

[mbarber84]

174 miles and 4 engine hours since last regen cycle completed and this is where I stand:

Fuel is treated with a 2oz per 10 gallon dose of AR6500. No towing on this interval so far. 100% unloaded driving. This works out to an average speed of 43.5 which is not overly high, but I’ve seen far lower. Passive regeneration seems to be more difficult to achieve and the soot loading seems to be more rapidly increasing as compared to the fuel treated with 6400D. The DPF was reading 11% after the last regen completed and I’ve already noticed that value increasing more rapidly. This is the first tank I’ve tested with the AR6500 where there was no towing and no residual trace of the AR6400D in the fuel. (Previous ones probably had some residual amount). Not as impressed with this round of performance. But still miles to go before regen. I still maintain there’s more to this than just fuel quality.

 

[OLEJOE]

I agree. But until we can get someone to check the tune on a truck like yours against a truck that has never had an issue, we’re in the dark. We can just keep trying simple things and run what seems to help and revert back on the things that don’t. As has already been mentioned, “no code, no problem”.

 

[mbarber84]

I agree. But until we can get someone to check the tune on a truck like yours against a truck that has never had an issue, we’re in the dark. We can just keep trying simple things and run what seems to help and revert back on the things that don’t. As has already been mentioned, “no code, no problem”.

For sure.

The archoil has still improved the situation rather than detracted from it. I’m fine continuing to use this while we see how things go as far as a solution is concerned. If Ram can’t get it together, it'll at least buy me time until I can either trade this one in on a new one, or potentially apply a more permanent solution to the source of the problem.

 

[oledirteh]

For sure.

The archoil has still improved the situation rather than detracted from it. I’m fine continuing to use this while we see how things go as far as a solution is concerned. If Ram can’t get it together, it'll at least buy me time until I can either trade this one in on a new one, or potentially apply a more permanent solution to the source of the problem.

You rebel. The 2021 tune is what you all need

 

[OLEJOE]

You rebel. The 2021 tune is what you all need

Along with the 2021 ECM !!!!!!!

 

[TomTom]

174 miles and 4 engine hours since last regen cycle completed and this is where I stand:
View attachment 76074
Fuel is treated with a 2oz per 10 gallon dose of AR6500. No towing on this interval so far. 100% unloaded driving. This works out to an average speed of 43.5 which is not overly high, but I’ve seen far lower. Passive regeneration seems to be more difficult to achieve and the soot loading seems to be more rapidly increasing as compared to the fuel treated with 6400D. The DPF was reading 11% after the last regen completed and I’ve already noticed that value increasing more rapidly. This is the first tank I’ve tested with the AR6500 where there was no towing and no residual trace of the AR6400D in the fuel. (Previous ones probably had some residual amount). Not as impressed with this round of performance. But still miles to go before regen. I still maintain there’s more to this than just fuel quality.

I’m having the same experience…not working as well as the 6400d. I moved up to the “performance dose” as well which almost seemed to make it worse. Was considering doing just the fuel treatment again followed by no other additive after. Hot shots EDT does the same, makes my soot loading worse, so maybe just stick with 6400d only.

Also, still curious about that ground wire issue…I wonder if we can get more photos of the work that was done? I oftentimes feel like my system is acting like the sensor is giving bad readings.

 

[Units]

I’m currently using the daily at a rate of 2oz/10gal. I used the cleaner and did hit the 24hr regen cycle. After dosing the cleaner, I used the daily at a rate of 1oz/ 10 gal, passive regen occurred pretty easy; which I’m sure there was some residual left from the cleaner; for the 2 tanks before my trip. On my recent long trip with my TT in tow, I hadn’t used the daily at all, figured the passive regen while towing was more than enough. When I got back I decided to use just the daily to see if I could pickup where I left off regeneration wise. After getting back, 1st tank I got right at 390miles, but since then it has gotten progressively better. I’m at 4 tanks in using the 2oz/10gal and as of this morning I’m at 220 miles and still showing zero on the DPF gauge; it did jump up 1/8 as usual when I hit the interstate this morning but when I got off I used a good dose of the skinny pedal and it went back down to zero. So theoretically, I should have no problem hitting 600miles before an active regen with no towing. Before using archoil, I was getting 250 - 300 miles before an active regeneration, no towing. So that’s an extra week or so of driving for me before hitting an active regen. I’m thrilled and will take what I can get. It’s definitely doing something. YMMV.

 

[Units]

174 miles and 4 engine hours since last regen cycle completed and this is where I stand:
View attachment 76074
Fuel is treated with a 2oz per 10 gallon dose of AR6500. No towing on this interval so far. 100% unloaded driving. This works out to an average speed of 43.5 which is not overly high, but I’ve seen far lower. Passive regeneration seems to be more difficult to achieve and the soot loading seems to be more rapidly increasing as compared to the fuel treated with 6400D. The DPF was reading 11% after the last regen completed and I’ve already noticed that value increasing more rapidly. This is the first tank I’ve tested with the AR6500 where there was no towing and no residual trace of the AR6400D in the fuel. (Previous ones probably had some residual amount). Not as impressed with this round of performance. But still miles to go before regen. I still maintain there’s more to this than just fuel quality.

I know you hit the interstate on your commute, have you tried a good hard acceleration to get up to speed after getting off the interstate? That seems to help my DPF % jump back down.
Just a thought.

 

[flan]

Can the truck sense the change in (good) performance and adjust its parameters to go back to its old ways?