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Automatic Regen too often

AH64ID said:
Temp and pressure is all that sensor has to report, one would think it could be pretty dirty and still do that especially if the boost gauge appears to be working normally.

I'd love to see a stock with delete truck run and observe how dirty the exhaust is, which could help determine if it's an engine tuning issue or an emissions issue (software or hardware).
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I agree, would be really interesting comp. Im operating on the theory that its a software/sensor issue since the pre 22 trucks seem to have far fewer issues and the hardware is pretty identical?
 
It really feels like in my truck it literally depends on which way the wind is blowing. I just took it for a drive to pick up my son...passive regen the whole way, dropped 8% points by the time I got there. Turned around and it immediately started going back up. Was up 9% points by the time I got back. Makes no sense to me. Already had the MAF replaced, but the dealership didn't do the relearn process. I tried to do it myself, but that was hard to follow. I have driven it on a 3,000 mile towing road trip where it only regened on the 24hour mark, but I was pretty much towing the entire time. I am starting to become so frustrated with this that I am considering a Ford. Right now I am regenning less than every 100 miles and it makes no sense. Dealership won't doing anything more since the CEL hasn't come back.
 
I wonder how our trucks would perform if we took a 2021 factory tuned ECM and put it in....assuming someone was able to unlock it without changing the tune. That would be very instructional as to which direction to focus.
 
TomTom said:
I wonder how our trucks would perform if we took a 2021 factory tuned ECM and put it in....assuming someone was able to unlock it without changing the tune. That would be very instructional as to which direction to focus.
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This is how anyone with a '22+ tunes their truck so running a stock setup on a '21 or older ECM is very doable. Im not sure if anyone has run this test though with a stock 21 tune, 21 ecm on a 22 truck. Agree that it would be informative.
 
TomTom said:
It really feels like in my truck it literally depends on which way the wind is blowing. I just took it for a drive to pick up my son...passive regen the whole way, dropped 8% points by the time I got there. Turned around and it immediately started going back up. Was up 9% points by the time I got back. Makes no sense to me. Already had the MAF replaced, but the dealership didn't do the relearn process. I tried to do it myself, but that was hard to follow. I have driven it on a 3,000 mile towing road trip where it only regened on the 24hour mark, but I was pretty much towing the entire time. I am starting to become so frustrated with this that I am considering a Ford. Right now I am regenning less than every 100 miles and it makes no sense. Dealership won't doing anything more since the CEL hasn't come back.
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Have you reached out to Ram Cares? Dealers were refusing so look at my truck due to no check engine light, but I had been tracking my regens and could show it was doing it every 20-25 miles - snap a picture (have date and time stamp turned on on your phone) when it starts and stops then also log it. I keep a small notepad in my truck where it's logged. After contacting Ram Cares, and then them contacting a dealer they started looking at it. They tried manual regen first. Then took for a drive, and it started a regen again 25 miles later, then again 20 ish miles later. They've at least established mine is going into regen even when the DPF is clean. They did the MAF yesterday, and today is supposed to be the re-learn followed by additional test drives to make sure it did or did not solve the problem.
 
22PearlRamMegaHD said:
Have you reached out to Ram Cares? Dealers were refusing so look at my truck due to no check engine light, but I had been tracking my regens and could show it was doing it every 20-25 miles - snap a picture (have date and time stamp turned on on your phone) when it starts and stops then also log it. I keep a small notepad in my truck where it's logged. After contacting Ram Cares, and then them contacting a dealer they started looking at it. They tried manual regen first. Then took for a drive, and it started a regen again 25 miles later, then again 20 ish miles later. They've at least established mine is going into regen even when the DPF is clean. They did the MAF yesterday, and today is supposed to be the re-learn followed by additional test drives to make sure it did or did not solve the problem.
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Yeah I’ll have to start logging it I guess. I don’t know how Ram hasn’t figured this out yet….i can’t imagine they are putting much effort into it though given the lack of solutions at this point.
 
AH64ID said:
Temp and pressure is all that sensor has to report, one would think it could be pretty dirty and still do that especially if the boost gauge appears to be working normally.

I'd love to see a stock with delete truck run and observe how dirty the exhaust is, which could help determine if it's an engine tuning issue or an emissions issue (software or hardware).
Click to expand...
I said the same thing. Would be nice to see without the emissions in place
 
TomTom said:
Yeah I’ll have to start logging it I guess. I don’t know how Ram hasn’t figured this out yet….i can’t imagine they are putting much effort into it though given the lack of solutions at this point.
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Unfortunately I think corporate America keeps putting the onus on the consumer. With that said, while the jury is still out, I have been pleased that Ram Cares got me into a dealer once it was clear I had proof of everything.

When I was at the dealer back in April, before I got them to look at my truck, I remarked "Surely the computer tells you, or logs when this thing regens?", and I got the blankest of stares like "They don't and I dont have a good response why". Eventually I was asked for a copy of my logs, although I've never been asked to produce the photos I have. I will continue to document, document, document. Even when they return my truck.
 
mbarber84 said:
Archoil went into a fresh tank of fuel tonight View attachment 73678

My DPF % REG is sitting at 97% on the iDash so it’ll go into regeneration tomorrow. I’m seeing pretty rapid rises in that PID, sometimes so fast it doesn’t even seem plausible in reality. If the truck is running that “dirty” there would have to be significant excessive fuel or lack of air issue. Definitely lends more credibility to the sensor / programming theory being at fault for these frequent regenerations. I’m currently at 239 miles and about 6 engine hours since the last active regen cycle completed. Itll be in regen tomorrow before reaching 300 miles, so my frequency is definitely getting worse. 474,496,331, and this one likely to be sub-300. 14, 11, 8, and now likely about 6 hours.

I took some time to do some investigating in the engine bay. Wanted to inspect the MAP sensor. As suspected it was soot-laden. I cleaned as best I could with CRC MAF sensor cleaner, however a lot of the soot remained. I didn’t want to attempt any physical contact with the sensor, so just used the spray as best I could and then reinstalled. No noticeable change in performance. View attachment 73679
View attachment 73680
View attachment 73681
The IAT sensor was clean and looked like new. I elected not to mess with the MAF, as I didn’t have the time to do a relearn drive cycle if it started to cause issues. In talking with some really good Ram techs, my truck has the MAF that they’ve been changing out for the newer one.
View attachment 73682
View attachment 73683
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I pulled my MAP sensor and it looked much like yours soot wise, cleaned it with non-chlorine parts cleaner and it cleaned it to basically new looking and I did notice quite the difference of throttle responsiveness / pep. I also tried MAF cleaner initially and it didn't do basically anything to the soot. Just food for thought, YMMV. That said overall it didn't effect the regen cycles, mine is still ~350-450 / 12-15hrs. Also mine is a 2021 HO since there seems to be alot more 22 talk in here. Also also, I apparently forgot to take a pic after I cleaned it cause I'm dumb...
 

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Ostracize said:
I pulled my MAP sensor and it looked much like yours soot wise, cleaned it with non-chlorine parts cleaner and it cleaned it to basically new looking and I did notice quite the difference of throttle responsiveness / pep. I also tried MAF cleaner initially and it didn't do basically anything to the soot. Just food for thought, YMMV. That said overall it didn't effect the regen cycles, mine is still ~350-450 / 12-15hrs. Also mine is a 2021 HO since there seems to be alot more 22 talk in here. Also also, I apparently forgot to take a pic after I cleaned it cause I'm dumb...
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So that sensor is the first sensor on the air box cover toward the front of the truck?
 
I wonder if a truck with this sort of issues got a Calibrated Power tuner with tunes installed, would the issues be gone? This would indicate the issues are purely software related.
Unfortunately it appears most of the issues are on the 22+ trucks so that idea above just isn't gonna work...
 
steve49 said:
So I pulled the MAP sensor today and it was pretty clean, just a very very slight touch of soot! My truck a 19 with 47,000 miles, shows made in the USA and the two prong sensor is a maroon color. No regen issues!

View attachment 73805

View attachment 73806
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Has that sensor been replaced to your knowledge? Have you had the truck since new?
Asking because that's not the oem sensor and funny thing is even though it says usa on it... The only vendor I can find that sells it is AliExpress which to my knowledge predominantly sells chineseium items. If it's working fine then great.. I just find it odd.
 
FYI,

Those are "TMAP" Sensors.

Pick them up genuine Cummins 2897334 part on ebay $60-100.

Genos has them for $107. 90 day return policy.
 
my '22 just started to regen and show DPF filling quickly, 42,500 miles. started after oil change, fuel filters and air filter change.

truck has an S&B intake setup that has been on for almost 40k miles. i can only think of 1 other time the truck regen'd outside of the 24hr forced regen. the S&B had an oiled filter on it, switched to the dry filter. i also used docs diesel fuel filters this time instead of OEM.

i did have one code show up with no warning light - P1451-00 - exhaust temp not high enough for active regen?

does the MAF sensor not recalibrate on its own? im assuming the air filter change has prompted my issues.
 
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