Automatic Regen too often

[ginopan70]

I had to delay the drop-off of my truck until the other day but I just picked my truck up this morning and although I asked them about inspecting the whole intake, exhaust, and fuel system for leaks, it sounds like all they did was inspect the DEF system and air filter. The truck wasn't in auto regen when I picked it up (the gauge read about 35%) but I jumped right on the freeway at 85 when I picked it up and it was in auto regen within 3 miles. I called Ramcares and they told me to take the truck back to the dealer and that they would work with the dealer on fixing the issue. The prinotut I got from the dealer when I picked it up reads...


"I check and found dtc P0421-00-CATALYST 1 EFFECIENCY BELOW THRESHOLD BANK 1. I checked and found the there is a PCM sofware update available this update will be performed on line C with the recall (Y43). I checked and printed out the vehicle duty cycle report and found that the vehicle is still being operated in light load conditions this is not allowing the after-treatment system to complete the regenerations cycles and can cause damage over time. I left a printout of the duty cycle report in the vehicle. the customer needs to be made aware that if they continue to operate the vehicle in this manner after-treatment damage may occur. I removed and inspected the engine aitr filter and found that the air filter is the updated style without the glue strips. the air filter is slightly dirty but is not restricted at this time. I inspected the def system and found no leaks or damage at this time. the def system is full and no other dtc's are reported at this time."


This is frustrating, they talk about light load conditions but in the roughly 1,500 miles since I last had it in the dealer for this I've driven almost exclusively on the freeway usually around 85 MPH and had roughly 300 miles on the freeway with an aprox. 9,000 lb trailer behind it. I can't get a straight answer out of them as to how long I should have to drive at highway speeds with or without a trailer to come out of auto regen.



Below is a breakdown of the miles and driving since the dealer last saw it of when the truck was in and out of auto regen, the most miles out of auto regen were 31. Every time it WAS NOT in auto regen was in a situation where I turned the truck on and the DPF filter happened to be at zero, there was never a time while driving that the auto regen screen just went back to the filter gauge instead of the regen message.

EDIT: I realize that this chart below is misleading a bit, the "Since Last regen" column needs to change... the only time the truck with NOT in regen are 22, 31, and 18. the other miles are all regen time between the lower numbers.

Auto Regen	Miles	Since Last regen
On	9526	NA
Off	9889	363
On	9911	22
Off	10353	442
On	10384	31
Off	10660	276
On	10678	18

You can see below what it looks like when I'm driving highway speeds watching the gauge climb, it goes from roughly 35% at 10,375 miles to ~45% at 10,381, back into regen at 10,384.
View attachment 62321View attachment 62322View attachment 62323

I don't know that I'm necessarily looking for anything here as I already have some great info from this community and now have a ticket in with Ramcares but any feedback is welcome. As of now this is almost just another place for me to document what is going on.

 

[ginopan70]

Guys I’m truck driver I’ve 3500 and driving a month approximately 10k miles and 429k miles now dpf is going full but upper side people talks no driving habit etc it’s %100 if you drive your truck daily 10-20 miles that dpf doc nox all will be ash and clogged. 400 miles it’s good for regen but getting full so do your truck twice a week passive regen and a least ones active regen. 10k miles truck is going regen means this guy isn’t drive enough or short drive park off engine and turn on engine again so intake and horn first getting clogged map sensor no properly reading low boost pressure etc.etc. So drive your truck this truck when you drive will be happy. Also 2459 mostly related intake getting ash accumulation and blocking air to engine from there to all the way including intercooler to cat anywhere it could be but mostly intake area %80 I’m sure
Good luck
P.S: Still I’m learning like you guys still I’ve problems with this truck.

 

[Brutal_HO]

Guys I’m truck driver I’ve 3500 and driving a month approximately 10k miles and 429k miles now dpf is going full but upper side people talks no driving habit etc it’s %100 if you drive your truck daily 10-20 miles that dpf doc nox all will be ash and clogged. 400 miles it’s good for regen but getting full so do your truck twice a week passive regen and a least ones active regen. 10k miles truck is going regen means this guy isn’t drive enough or short drive park off engine and turn on engine again so intake and horn first getting clogged map sensor no properly reading low boost pressure etc.etc. So drive your truck this truck when you drive will be happy. Also 2459 mostly related intake getting ash accumulation and blocking air to engine from there to all the way including intercooler to cat anywhere it could be but mostly intake area %80 I’m sure
Good luck
P.S: Still I’m learning like you guys still I’ve problems with this truck.

Are you OK?

This reads like you're having a stroke.

 

[Trash Panda]

Are you OK?

This reads like you're having a stroke.

To be fair, the way that the emissions systems seem to malfunction with a mind of their own is enough to give a guy a mild stroke.

 

[OLEJOE]

To be fair, the way that the emissions systems seem to malfunction with a mind of their own is enough to give a guy a mild stroke.

I agree with your statement that it has a mind of its own. 90% of the time, my truck works text book perfect. Can go months at a time with nothing registering on the EVIC DPF gauge. Then, like this week, DPF gauge jumped to 25% during the exact same driving regiment that it has done most of its life. Then next drive cycle it starts passively regening with the DPF gauge going back to zero. I also monitor it with a ScanGauge lll and monitor progress. During this crazy cycle, with 12 hours run time, the DPF percentage climbed from 50% to 73% during the drive. Next drive starting at 73% then dropping back to 53% that coincides with the 12+ hours drive time. Same route, same fuel, same speed and same weather. DIIK

 

[Trash Panda]

I agree with your statement that it has a mind of its own. 90% of the time, my truck works text book perfect. Can go months at a time with nothing registering on the EVIC DPF gauge. Then, like this week, DPF gauge jumped to 25% during the exact same driving regiment that it has done most of its life. Then next drive cycle it starts passively regening with the DPF gauge going back to zero. I also monitor it with a ScanGauge lll and monitor progress. During this crazy cycle, with 12 hours run time, the DPF percentage climbed from 50% to 73% during the drive. Next drive starting at 73% then dropping back to 53% that coincides with the 12+ hours drive time. Same route, same fuel, same speed and same weather. DIIK

I recently went from 24 hour regen cycles, straight to 4-8 hour cycles, with exactly zero change to the driving style or fuel source of the truck.

Really makes a guy want to lose parts in a boating accident.

 

[Will_T]

I agree with your statement that it has a mind of its own. 90% of the time, my truck works text book perfect. Can go months at a time with nothing registering on the EVIC DPF gauge. Then, like this week, DPF gauge jumped to 25% during the exact same driving regiment that it has done most of its life. Then next drive cycle it starts passively regening with the DPF gauge going back to zero. I also monitor it with a ScanGauge lll and monitor progress. During this crazy cycle, with 12 hours run time, the DPF percentage climbed from 50% to 73% during the drive. Next drive starting at 73% then dropping back to 53% that coincides with the 12+ hours drive time. Same route, same fuel, same speed and same weather. DIIK

I have a sense from the couple times mine did anything other than normal 24 hr. regens, that fuel, or bad fuel, can be a big factor.

 

[OLEJOE]

I have a sense from the couple times mine did anything other than normal 24 hr. regens, that fuel, or bad fuel, can be a big factor.

It definitely can. I bought some fuel at a Walmart store in a different locale while on a trip pulling our travel trailer. The price was so good I filled both of my tanks, truck tank and 60 gallon auxiliary tank, and thought I never would get that crap burned up. I double dosed it with Archoil and transferred some of it to my tractor that doesn’t have emissions on it. Plus I kept putting fresh fuel in the truck to dilute it down. It didn’t seem to make a difference as long as I was towing the trailer and working it hard though.

 

[56ram2500]

I have noticed since the pipeline went down between WA & OR that after is had been fixed now both my wife's Rav 4 and my truck have been seeing lower mpg numbers, both are using Archoil fuel additives, oh we buy our fuel from the same stations as before the pipeline went off line due to major leak so wonder if its poor quality fuel being made as I'm out of excuses as too why.

 

[ErikTheRed]

Are you OK?

This reads like you're having a stroke.

LOL!!

My guess it, English probably ain't his first language.