You can "get away with it" but interrupting a regen isn't good for the long term health and well being of the DPF.
IMO, the "keep driving" was due to the interrupted regens.
Ram Heavy Duty Forum
Register a free account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members through your own private inbox!
You can "get away with it" but interrupting a regen isn't good for the long term health and well being of the DPF.
IMO, the "keep driving" was due to the interrupted regens.
Glad it's working better, and it sounds like a great dealer you have, but there a several modes you can see. If you have the DPF filter displayed, you will see the Automatic message come up when it's doing a regen. Otherwise, you won't see it. The "keep driving" mode will get displayed on your dash no matter what. The bigger question is how many hours are you getting between the "Automatic" regens?
I agree. The only time I've ever seen the "keep driving" regen was after I'd interrupted the Auto regen.
Not too long after I got my truck I had a job about an hour away. Highway driving, no stops. About 10 mins from my meeting with my clients the keep driving sign comes on. This was my first time seeing this. Since the new filter has been installed haven't seen one keep driving message. My bro in law has a 24 cummins and has never seen a keep driving message. We were having beers last night and he checked his gauge and the the DPF was at 0. Time will tell. The biggest issue for me is not getting the mileage out of the DPF. I knew it would need to be replaced at some point, just not at 64,000 miles. Thanks.
I have a 2022 3500 with the HO, only 24k miles. I think the HO is a little different as I have never seen a "keep driving" message, it just says auto DPF regen in progress. But, for the past few months I have been seeing the DPF gauge going up daily. Then when it gets about half way it starts its auto regen. The next day, same thing. Took it to the dealer they did a forced regen and drove it for 50 miles. Seemed ok, then it starts all over again. Took it back, dealer says change the engine oil and filter, and make sure you are not over filling! I said I fill until the dipstick says full, he said, only put in enough to get into the safe range. Not to the full mark. He also said let it drip out for at least 1/2 hour as the engine holds at least 1 quart in side. OK. Still getting regens ever day. Dealer says your breather filter is probably full of oil if you ran too much in the crankcase... 400.00 to replace it, I said I will take care of it. Replaced the filter and sure enough, it was full of oil. Recommendation... Only put in 2.5 gallons to start and add only until you get to the middle of the "safe" range. I guess my issue is why no error codes, nothing saying something was wrong? I am wondering if the EGR is full of crud as well.
Interesting. What and where is the “breather filter”? I haven’t heard of that one but this is my first diesel so that’s no surprise.
Under the pink….
Attachments
downsc123
Active Member
How often is everyone replacing their CCV filter - manual for my 2022 says every 75K miles or 5 years but searching around the internet suggests it should be much sooner than that.
Known potential causes of frequent regens - wrong air filter, saturated CCV filter, dirty MAF or MAP sensor, fouled EGR, poor fuel, driving without 18,000 lbs behind the truck, evil eye from a Haitian witch doctor, etc. It's unbelievable how sensitive the system is to anything outside of the "perfect" envelope. After reading everything on this forum, I'm beginning to wonder what DOESN'T cause frequent regens. Hmmm, I wonder if maybe my tire pressure is too high or if I have the wrong bed cover.
Ostracize
Well-Known Member
I change mine every 40k
- Messages
- 5,208
- Reaction score
- 5,414
- Points
- 113
Some additional clarification on standard active regens vs “keep driving” active regens.
The standard active regen, either triggered by soot loading (DPF gauge at ~45%) or 24 hours total engine run time since last regen, can be interpreted. It’s still good practice to let it complete, but it can be interrupted. I have noticed that interrupting time based active regens is less of an issue than soot based regens. When a soot based regen is interrupted the truck may sense a cleaner DPF than it actually is at the next startup and shorten the regen which results in a DPF that isn’t as clean as it would have been has the regen been completed. This shortens the interval to the next soot based active regen occurs, it’s a viscous cycle.
“Keep driving” notifications occur when the standard active regen isn’t able to reduce the soot loading even though active regen is occurring. This would be indicated, if you could see the dash, of soot loading above ~45%.
Multiple interruptions to the active regen doesn’t dictate a “keep driving” message will occur. I’ve had multiple hour based regens occur with multiple stops and take 2-3 hours to complete due to slow driving with insufficient exhaust temps to even inject fuel into the exhaust. The soot loading in the DPF wasn’t increasing to above the limit thou, so no message to “keep driving” appears.
If you’re getting a “Keep Driving “ message then the duty cycle is really bad for these trucks, really bad, or there is an emissions system malfunction.
My 2022 Sept 2021 built 3500 HO 23,000 miles. I went 3 years with out a problem. Dealer replaced the radio as it was going bat $hit on me. That and 2 recalls. Starting in February 2025 started to notice the DPF filling up quickly and having to do an "automatic regen". Took it to the dealer in March as this kept progressing from once every few days to a few times a day! They said, no error codes, we will do a burn off and you should be fine. Its because its cold weather and you don't drive it enough. They said, change the oil/filter, change fuel filters, change air filter... DONE. still happening. In addition I changed the Crankcase vent filter. So 7when I changed my oil I took a sample and sent it in. It showed fuel dilution. 4 is considered bad, mine was 5.6. Only 6000 miles on the oil and I use Amsoil full synthetic. Took it to the dealer and I said, I think I have a leaky injector, they said... Well the truck is not designed to be a daily driver, its a work truck. I said I work it plenty in the summer pulling an 18k lb dump trailer. Since winter, I have put less than 1,000 miles on the damn thing. So 3 years down the road you tell me that I can't drive my truck at all in the off season??? I am so pissed off at RAM. It went from, too many short trips, too much idle time, don't do warm up time, just start and drive (which is opposite of what the owner manual says), then they say I am using bad fuel.... From Sunoco. I called the ford dealer and they just laughed at me.. He said we don't even like taking 22's in trade. Cummins piece mealed the engines together with what ever parts they could find. The DPF issues are well known. It was fine for 3 years until the 3/36 expired then all this crap starts. A friend said he read that the cummins engines from the Covid supply chain era are GARBAGE. They redesigned them back to the pre 2021 engines as he heard they were grenading around 100k miles. Next one will be a Ford 350....
I posted a TSB on this back in post 39 of this thread. May help you at the dealer. Although since you haven't thrown the code yet, maybe not. I've read the DPF is covered under the emissions warranty, which is much longer than the 3/36 warranty.
I don't believe the Cummins motors are the issue here. Seems Ram used a batch of bad DPF's in the '22s.
Don't think that Ford and GM don't have issues with this EPA forced stuff either. The modern diesel pickups need to be worked. Fortunately, ours is just our puller and has given us no issues so far.
I don't believe the Cummins motors are the issue here. Seems Ram used a batch of bad DPF's in the '22s.
Don't think that Ford and GM don't have issues with this EPA forced stuff either. The modern diesel pickups need to be worked. Fortunately, ours is just our puller and has given us no issues so far.