Regens at alarming rate!

[ironmike]

Did you use the MAF sensor cleaner? Did the issues start after you had the hpcr fuel pump upgrade?

I researched and see MAF spray or alcohol is recommended. I used 70% alcohol with Q tips and air to clean like new, there was not any contaminants after cleaning and viewing under a magnification... And yes i noticed regens more frequent after fuel pump recall..

 

[OLEJOE]

Sounds like the problem to me is the programming or updates they are installing in these trucks. Don’t know if the programming is corrupted or the people installing them.

 

[scdo]

Fingers crossed for you.

Once you get it back, let us know if it says Germany or China on the new MAF. Rumor the China ones are good and Germany not. Not sure anyone has posted a photo of the China made one yet, here or bookface.

Nevemind, I see @mbarber84 posted a photo of the China one in this thread https://hdrams.com/forum/index.php?threads/regeneration-frequency-issue-maf-poll.15736/

Dealer called today to say they received the wrong part yeserday... apparently the correct part is on backorder. So I'm picking up the truck (which still has the issue) for a 2-week RV trip later today. At least we believe we know what the problem is and the part is on order.

 

[tchur1]

The point about MAF sensor needing to relearn to a new filter is interesting. Sharing my recent non scientific findings as a data point. My trucks DPF gauge didn't move off 0 and only regened at the 24 hour mark for the first 15k miles. Right about 15k miles I noticed the DPF gauge starting to load up more frequently and I was going into regen every 300-500 miles (8-10 hours). I replaced the air filter at 17k miles with the proper AB filter from fleetguard.

Regens continued to occur every 300-500 miles or 8-10 operating hours for the next 2k miles. However, over the last month or so the temps have dropped significantly where I live into the 30s every day(welcome winter) and my trucks DPF gauge is no longer filling at all and Im only seeing regens at the 24 hour mark.

I have no idea if the cooler air has anything to do with this or if the MAF sensor completed its relearn but my truck is now operating again like it did for the first 15k miles of ownership.

During the summer I tow our boat (about 10k pounds) 2-4 times a week and other than that am daily driving the truck. I have not towed anything in the last 2 months.

 

[Units]

say what?

Like, on a “diet”.

 

[tchur1]

say what?

Ill say the dirty word. They are asking if you deleted your truck. Feel free to respond as you see fit.

 

[mhraxo]

Ill say the dirty word. They are asking if you deleted your truck. Feel free to respond as you see fit.

Oh ok no...lol... i unloaded it while i still could. Funny thing was the dealer owned a ram lot up the street and wouldn't sell it on the lot used as he knew these are an issue lmao

 

[DougB]

I noticed something on the iDash with the DPFTIM parameter, which Banks says is minutes. I don’t think it is minutes. Mine said 559 after last regen. If that’s minutes that’s 9.3 hours, but the hour meter on the EVIC was 6 total since last regen. I’m thinking that parameter is missing a decimal point and should have been 5.59 in hours, not minutes. I’ve not kept track of the hour meter along with the regens. I’m trying to do that now though.

Went 140mi between regens and 546 on the DPFTIM iDash parameter. Engine hours went from 689 to 694, just 5 hours. Hence, I now believe that parameter value is in hours, with 2 decimals. 5.46 hours in this last case.

The regen starts and the DPF% drops to about 90 after 5-6 miles, then shoots back to 100 after a couple more miles before going back down to 45ish at completion when the dash gauge will be zeroed. Have noticed this behavior on several of the recent regens.

Will check oil level and for air leaks this weekend.

 

[Sufdaddy]

Well, the new "special ordered" MAF did not work. When I picked the truck from the dealer the Filter showed about 25% within the 15 miles from the dealer to my house it went to 45% and started a regen. that took 100 miles to finish. Within 50 miles it went into regen again and threw a check engine light. I've got 34k on the truck and I truly think that at 36k when the truck is out of warranty they will say that this is all on me to pay for the service.
I wonder if the Banks kit would help this or if its a software issue that Chrysler just can't solve.

 

[DougB]

Well, the new "special ordered" MAF did not work. When I picked the truck from the dealer the Filter showed about 25% within the 15 miles from the dealer to my house it went to 45% and started a regen. that took 100 miles to finish. Within 50 miles it went into regen again and threw a check engine light. I've got 34k on the truck and I truly think that at 36k when the truck is out of warranty they will say that this is all on me to pay for the service.
I wonder if the Banks kit would help this or if its a software issue that Chrysler just can't solve.

Did the dealer do the MAF reset drive cycle?

 

[Sufdaddy]

I assume so. They used about 1/4 tank of fuel and drove it over 50 miles.

 

[CaptainMike]

Well, the new "special ordered" MAF did not work. When I picked the truck from the dealer the Filter showed about 25% within the 15 miles from the dealer to my house it went to 45% and started a regen. that took 100 miles to finish. Within 50 miles it went into regen again and threw a check engine light. I've got 34k on the truck and I truly think that at 36k when the truck is out of warranty they will say that this is all on me to pay for the service.
I wonder if the Banks kit would help this or if its a software issue that Chrysler just can't solve.

That's pretty much my expectation as well. Their just throwing darts blind and hoping something will stick long enough for our warranties to expire.

 

[mbarber84]

Well, the new "special ordered" MAF did not work. When I picked the truck from the dealer the Filter showed about 25% within the 15 miles from the dealer to my house it went to 45% and started a regen. that took 100 miles to finish. Within 50 miles it went into regen again and threw a check engine light. I've got 34k on the truck and I truly think that at 36k when the truck is out of warranty they will say that this is all on me to pay for the service.
I wonder if the Banks kit would help this or if its a software issue that Chrysler just can't solve.

Zero chance I would be investing thousands of dollars in aftermarket bolt-on stuff in a crusade to fix a factory flaw. The truck isn’t outside of its bumper to bumper yet. It’s their baby. If they can’t get it right, they need to make right by you. Adding extras like the banks kits may only muddy the waters and give “them” things to blame or point fingers at. If they can’t get a bone stock fixed that’s a serious problem.

 

[AH64ID]

Went 140mi between regens and 546 on the DPFTIM iDash parameter. Engine hours went from 689 to 694, just 5 hours. Hence, I now believe that parameter value is in hours, with 2 decimals. 5.46 hours in this last case.

That PID is in minutes, but more importantly it’s not reported to be accurate.

I have tracked every regen since new and only 3 of the 26 regens have not been 24 hour based, 2 soot loading and 1 stationary. This is an average of 22.7 hours between regens.

The PID only updates at the completion of an active regen.

If the PID was average time between regens then mine should read ~1360.

If it was time between the two most recent regens it would be 1440.

It currently reads 1530, which is 25.5 hours.

It’s read 1440 once, and I was surprised to see it.

I have seen it read much much lower as well, thou I can’t recall how low as I don’t put any trust in it. 600-800 rings a bell.

As you can see there isn’t anything obvious as to what it’s reporting, which is why it’s believed to be inaccurate.

Well, the new "special ordered" MAF did not work. When I picked the truck from the dealer the Filter showed about 25% within the 15 miles from the dealer to my house it went to 45% and started a regen. that took 100 miles to finish. Within 50 miles it went into regen again and threw a check engine light. I've got 34k on the truck and I truly think that at 36k when the truck is out of warranty they will say that this is all on me to pay for the service.
I wonder if the Banks kit would help this or if its a software issue that Chrysler just can't solve.

In the two soot loading based regens I’ve had the truck does run longer regens and appears to complete these regens based on residual soot loading. The DPF %age PID responds differently in a soot load initiated regen than it does in a time initiated regen.

I don’t think your issue is 100% software based or most of us would have issues very similar, which leads me to believe you probably have a bad DPF pressure sensor and the PCM things the DPF is more clogged than it is.

 

[DougB]

That PID is in minutes, but more importantly it’s not reported to be accurate.

I have tracked every regen since new and only 3 of the 26 regens have not been 24 hour based, 2 soot loading and 1 stationary. This is an average of 22.7 hours between regens.

The PID only updates at the completion of an active regen.

If the PID was average time between regens then mine should read ~1360.

If it was time between the two most recent regens it would be 1440.

It currently reads 1530, which is 25.5 hours.

It’s read 1440 once, and I was surprised to see it.

I have seen it read much much lower as well, thou I can’t recall how low as I don’t put any trust in it. 600-800 rings a bell.

As you can see there isn’t anything obvious as to what it’s reporting, which is why it’s believed to be inaccurate.

Two of last 3 regens the DPFTIM reading when converted to hours did not align with the change in total engine hours, but it did align when assumed to be in hours to the hundredth. The 3rd regen was a little off from total hours.

559 on PID and 6 on the total engine hours.
546 on PID and 5 on the total engine hours.
427 on PID and 3 on the total engine hours.

I know it updates after the regen finishes. I’ve not tracked regen start/end mileage and time so closely to see if it includes the regen time in that PID. I would assume it does.

This current cycle will be a good test as it’s mostly interstate miles so lots of time between the regens.

I’ll continue to keep track of it.

 

[AH64ID]

Two of last 3 regens the DPFTIM reading when converted to hours did not align with the change in total engine hours, but it did align when assumed to be in hours to the hundredth. The 3rd regen was a little off from total hours.

559 on PID and 6 on the total engine hours.
546 on PID and 5 on the total engine hours.
427 on PID and 3 on the total engine hours.

I know it updates after the regen finishes. I’ve not tracked regen start/end mileage and time so closely to see if it includes the regen time in that PID. I would assume it does.

This current cycle will be a good test as it’s mostly interstate miles so lots of time between the regens.

I’ll continue to keep track of it.

My PID has been in the 1300-1500 range for the last few months and I’ve only had 24 hour regens since Labor Day. I’ve seen nothing that would remotely indicate hours to the hundredth.

The 24 hour regen clock resets at the completion of a regen, so the PCM isn’t including active regen time in its 24 hour clock.

 

[kfscoll]

I'm confused about the 24 hour regen interval. My total engine hours (per the EVIC) went over 552 today. Since 552 is an even multiple of 24, I fully expected an active regeneration to begin. However, when I switched over to the DPF load screen on the EVIC there was no indication that an active regeneration had started. I continued to drive for about 15 minutes after I went over 552 total hours and an active regen never happened. The only thing that happened at 552 hours was that the soot load on my EVIC went from 1/8 load to zero, but I'm pretty sure that was a coincidence since I'd been on the highway for a while and passive regeneration was definitely taking place. Over the roughly 120 miles I drove today the EVIC never displayed a message indicating a regeneration was in progress, but my soot load did go from 1/8 to zero.

I've previously seen the EVIC indicate that a soot-based regen was in progress; those began exactly when the DPF indicator indicated 50% soot load, but recently I've been specifically avoiding soot-based regens by jumping on the highway every time my soot load begins to increase. Obviously this is getting old - not only does it waste a lot of time and put miles on the truck but it wastes a ton of fuel because I find I need to drive about 50 miles to get the soot load indicator to drop by one segment through passive regeneration.

I was really looking forward to a timer-based regeneration starting once I passed a 24 hour interval, mainly because I don't think my highway driving-based passive regens are getting the DPF totally clean. They'll always eventually drop the DPF gauge to zero, but it doesn't stay there long.

So, what is the 24 hour interval based on? What should I be looking at to see when a 24 hour-based active regen will occur? Total engine hours doesn't seem to be it. My understanding was that active regens would start after every 24 total engine hours as indicated on the EVIC (regardless of soot load), but that hasn't been my experience. It's possible I missed it, but I've driven at least 2000 miles since I last noticed a message on the EVIC indicating that an active regeneration was in progress, and that one was definitely soot-based. I usually leave the EVIC on the DPF gauge so I'm pretty sure I would've noticed a time-based active regen, even if I moved off of the DPF gauge for a few minutes.

 

[mbarber84]

The 24 hour timer starts once the previous active regeneration completes. It’s not a cyclic 24 hours.
Anytime an active regeneration cycle is initiated and subsequently completes, that timer resets itself. Doesn’t matter wether that active cycle was initiated by the timer or by the soot load in the DPF. If you want to track the regeneration you need to mark down the engine hours when an active regeneration starts and finishes, as well as monitor the miles between cycles. You’ll see on my chart below that sometimes the actual time between regenerations ends up calculating out to 25 hours because of the way the cycle initiates. Doesn’t necessarily start exactly when the engine hour meter rolls over

 

[OLEJOE]

I’ve had automatic regens happen at 23,24&25 according to the EVIC. The last 2 were with the DPF gauge on 0 but after reading some with the CTS3 it can read 0 on the gauge and still be up to 45% loaded according to the CTS3.

 

[kfscoll]

The 24 hour timer starts once the previous active regeneration completes. It’s not a cyclic 24 hours.
Anytime an active regeneration cycle is initiated and subsequently completes, that timer resets itself. Doesn’t matter wether that active cycle was initiated by the timer or by the soot load in the DPF. If you want to track the regeneration you need to mark down the engine hours when an active regeneration starts and finishes, as well as monitor the miles between cycles. You’ll see on my chart below that sometimes the actual time between regenerations ends up calculating out to 25 hours because of the way the cycle initiates. Doesn’t necessarily start exactly when the engine hour meter rolls over View attachment 67231

Thanks! That makes sense and was originally how I thought the 24 hour timer operated. Because I've lost lock on when my last active regen completed, I probably need to let a soot-based regen happen so I know exactly when the 24 hour clock resets. A couple of weeks ago I drove for about 30 minutes with the EVIC on the trip computer and noticed my soot load was down to zero when I switched back to the DPF screen. I bet that's when my last active regen happened and I just didn't see the message because I was on the wrong screen.

I probably need to let my truck "soot up" anyway because the way I'm driving it now (hopping on the highway every time the soot load increases) only masks any problems. During the winter months I don't tow anything and don't normally drive long distances. Since it's been so long since I've let a soot-based regen occur I'm not even sure how many miles I can get between active regens given my current stop-and-go driving pattern, but it wouldn't surprise me if it was only around 300 miles.