Regen

[Too Tall]

Correct, I know what a regen is, the only indication I have ever had was the smell....and it's been a while since I've noticed that.

Yea, sorry. (old man can't read, ha) I've gotten to where I can predict a regen is close based on the DPF differential pressure. That's my only clue.

 

[josephc1]

Bought my 2014 2500 6.7 in May 2016, this is my first diesel. In a little less than 2,000 miles I have never noticed any regeneration till today, at least that's what I think it was. I had some errands to run, when I got home I pulled it into the garage, always garage kept. Shut it down and getting out of the truck I smelled a light scent of raw diesel fuel. I hope the slight odor was because it was in a regen cycle. There was no difference in engine sound, just the raw fuel odor. There is 1/2 tank of fuel, tank was filled several days ago. Coolant temp was 195º, Oil temp was 200º, trans temp was 170º. First time for the smell of diesel fuel, could it be from regeneration?

 

[kthaxton]

Yes, there is a good chance that was a regen. I wouldn't worry about it unless you get the smell consistently over the next several drives or find other issues (leaks etc). The regen may need to complete the next time you drive it so don't be surprised it you smell it again.

 

[CAPN Harley]

Hey I want to thank you all for the responses and input as the regen issue, I believe I have discovered the source of the smell. As my wife was undergoing some medical treatments and she discovered that she could mask her passing gas as the truck going into regen. :-laf

 

[TCollier]

I've never heard or seen any indication of a regen either. I'm fairly observant of any noise changes, smells and responsiveness of the truck too. Drive 200 miles every two weeks going to and from work with 2 hours of that over 75mph. But the two weeks I'm home it's 10 minutes here or 15 minutes there averaging 25mph here and 50 there. Probably average 300 miles driven at home not including the times we take the 5er somewhere (which is a lot less than I would like).

 

[gottabirdog]

I'm fairly new to my 6.7 and liking it better all the time. I've been concerned about the occasional increase in exhaust noise that is noticeable at low engine speed. After putting in the CTS, I could see that the noise was only during the regen. It's similar to exhaust brake noise. Glad that the noise isn't abnormal.
I've been traveling towing a 15,000 lb fifth wheel since mid June. After reading this, I'm wondering if my regen cycles are normal. With EGTs at the DOC exceeding 800 and approaching 1000 degrees, should I be seeing regens while doing highway driving? I've only seen one recently while runing around town. The others have been on the highway during several days of highway driving.
One thing I found after buying my truck was that although it had 21,000 miles, it had 320 hours of idling time, I suspect it came out of the oil fields in TX or OK as it came through the auction in OK, was a lease truck, and was filthy with orange dirt every where despite the dealers attempted clean up . Might this high idle time have something to do with my seemingly frequent regens? I now have 28,000 miles.
Steve Graves

 

[gottabirdog]

That was my first post.I just added my signature to show my truck.

 

[Newsa]

My 2013 makes noticable gen noise. But my regens always stop at and above 20 mph. At least that's when i stop hearing them. Others will swear that their truck makes mo noticable regen noise

Keep an eye on your oil. If it is refenerating that often, you could get fuel cylinder wash that dilutes your oil.

Mine is a g56. So mine seems to stop active regen at 20 mph

 

[schmeg]

My 2013 makes noticable gen noise. But my regens always stop at and above 20 mph. At least that's when i stop hearing them. Others will swear that their truck makes mo noticable regen noise

Keep an eye on your oil. If it is refenerating that often, you could get fuel cylinder wash that dilutes your oil.

Mine is a g56. So mine seems to stop active regen at 20 mph

Regens are not speed dependent. If anything the regen becomes more efficient when you put a load on the motor. The hotter the EGT the better. It seems like I can complete a regen in 10 minutes if I'm in 6th gear going 50-60. Going slow speeds with minimal load results in a 15 minute regen.

 

[Newsa]

Regens are not speed dependent. If anything the regen becomes more efficient when you put a load on the motor. The hotter the EGT the better. It seems like I can complete a regen in 10 minutes if I'm in 6th gear going 50-60. Going slow speeds with minimal load results in a 15 minute regen.

Let me clarify, I can hear active regens ( the noise associated with active regen) at 19 mph (and every speed from 0 to 19 mph) The noise that I associate with regens stops at 20 mph. So maybe the active regen changes in some way at and above 20 mph?

I never hear passive regen.

I suspect the programing for active regen is different for manual transmission trucks.

 

[schmeg]

I can only report what I see on my Scanguage II. I monitor Turbo Temp, DPF inlet temp and SCR temp. When I see DPF inlet temp jump from a norm of 525f-625f unloaded/cruising to 925f-1025f and stay there, its a regen. I don't listen for noises. I don't need to with a gauge. My EcoDiesel used to report regen active, and STM (soot) levels, but I have yet to get the Scanguage II to recognize these fields with the CTD. The EGT's alone tell the tale. Unfortunately I can't see a regen coming by watching soot levels. The truck will enter a regen at a pre-determined level. As long as the truck is not immodestly shut down, and repeatedly shut down multiple times in a row, you should never see a panel annunciation indicating a "forced regen". If a forced regen occurs and it is not complied with, then it could force a trip to the dealer. This was a problem with a few ED owners when I was over on the ED forum. This is why I bought a gauge in the first place, so I could see it coming and just let the truck go through the process. It was a much bigger issue with the ED. It is a dirty little motor and regenned every 150 miles in town driving. My CTD seems to regen every 700-900 miles. I'm not sure why the regen programming would be any different for an auto vs. Manual trans. Once a regen is under way, the ECU is programmed to keep the regen going until it is completed. With the ED, the region would stop if you idled at a stoplight for more than a half minute or so. My CTD seems to hang on to the regen at a stoplight.

 

[Newsa]

I'm not sure why the regen programming would be any different for an auto vs. Manual trans.

I don't know why either. But if you read the whole thread, you will see different symptoms. (For example) Some see it go into active regen when placed in park...... and go out of regen when placed in drive. The manuals don't have "park". I suspect there are other regen programming differences in a manual because i experience different active regen signs..... at different parameters than those with automatics.

 

[Newsa]

If the Ecodiesel regens every 150 miles, it doesn't sound very economical?

 

[schmeg]

It doesn't use very much fuel when it regens. You can go 250 or so highway miles before a regen. Mine got 24 city 26 hwy. I tossed a GDE tune in the truck. Best money spent. It shuts off EGR electronically and adds a little power bump. It spaced Regens out to 700 or so miles. Its a nice truck. Just not heavy enough for what I'm towing and the mileage involved.

 

[gottabirdog]

This thread and it's responses have been helpful. Thanks to the forum members.
I still don't understand the connection between the SCR with it's use of DEF to reduce NOX and the DPF to reduce particulate matter. I'm going back to research the older issues of TDR that pertain to see if I can make some sense out of it before I ask more questions.

 

[josephc1]

It must have been in a regen cycle because I have not detected the odor of raw fuel again. I'm not going to worry about it and let the truck take care of what it needs.

 

[josephc1]

Bought my 2014 2500 6.7 in May 2016, this is my first diesel. In a little less than 2,000 miles I have never noticed any regeneration till today, at least that's what I think it was. I had some errands to run, when I got home I pulled it into the garage, always garage kept. Shut it down and getting out of the truck I smelled a light scent of raw diesel fuel. I hope the slight odor was because it was in a regen cycle. There was no difference in engine sound, just the raw fuel odor. There is 1/2 tank of fuel, tank was filled several days ago. Coolant temp was 195º, Oil temp was 200º, trans temp was 170º. First time for the smell of diesel fuel, could it be from regeneration?

It must have been in a regen cycle because I have not detected the odor of raw fuel again. I'm not going to worry about it and let the truck take care of what it needs.​

 

[alyoops]

I used the CTS 2 to monitor my Filter percentage and EGT on the EcoDiesel. I got over 10,000 KM before refilling the DEF. Sold it and have the CTS 2 on my 2500 TD. My DEF levels have dropped, but REGEN status is always off and I don't see a pid option to select REGEN Filter or anything that tell me a REGEN is occuring. I updated my CTS 2 recently. Still no options. Am I missing something.

 

[Too Tall]

I used the CTS 2 to monitor my Filter percentage and EGT on the EcoDiesel. I got over 10,000 KM before refilling the DEF. Sold it and have the CTS 2 on my 2500 TD. My DEF levels have dropped, but REGEN status is always off and I don't see a pid option to select REGEN Filter or anything that tell me a REGEN is occuring. I updated my CTS 2 recently. Still no options. Am I missing something.

That's strange. I have the CTS, not the newer CTS 2 but I get a little red light at the top center of the screen when in regen. There's also a PID for Regen status = on or off, and one for DPF pressure.

 

[alyoops]

Oops, I meant CS 2. I do have REGEN STATUS but always stays off. I did get a green and red light on the EcoDiesel, but not on the Ram 2500 TB. I notice the DPF pressure pid is available but haven't tried it yet. I was watching the REGEN STATUS, never changed to on.