First regen today. 35k miles.

[Grayhound]

Interesting, do you need to get a scan gauge specifically for a diesel? I'm going to look into that. Thanks!

There is no need to worry about what you saw.

I would add whatever gauge you like best. Banks, scanguage II scanguage III. What you want to see is when is the system in active regen, from there you just want to let it burn down to 8% and shut itself off.

All that has happened to you is that you have gone into regen at 80% and not fully burned down to 8% enough times that the system is saying wait, burn me down to 8% and we’ll be good again.

The factory system is fine. What you did is perfectly within specs.
Jeep is giving us need to know info. You need to burn down the dpf filler to 8% every so often to keep things in line.

What a lot if us do is get a gauge like scanguage II or banks gauges so we can see how full our dpf is and when a regen stats are we fully burying down to 8%.

You can keep running like you are, or if you want you can buy an aftermarket gauge that will allow you to see more and adjust behavior and maintenance accordingly.

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[BDinTX]

Active regen - happens silently when soot level in DPF reaches 80% or once every 750 miles approximately (whichever threshold you reach first.

I’ve got a Banks iDash and intentionally watch soot load on long road trips. At least twice I’ve seen it get into single digits then start a regen.

I figured their programming didn’t know what to do when it hit zero and just defaulted to regen. ?

Your explanation sounds better though. Is the ~750 mile regen just an observation or did you find it documented somewhere?

 

[grimmjeeper]

This is correct, but there are secondary indications, like needing to refill DEF, higher than normal engine and oil temp and pressure during a regen, which one would not notice unless you're looking for it or watching the offroad pages gauges. I'm weird, when I do longer trips, that's what I have on the screen.

DEF use is more about how hard you're working the engine. Running hard (towing and/or long pulls up steep grades) increases temps. Higher temps cause more NOx emissions. More NOx causes more DEF use. You may burn a little more DEF during a regen but that's not much compared to working the engine hard.

And a regen only bumps up exhaust temps. Not engine temps.

 

[grimmjeeper]

I got one today saying exhaust filter nearing full, continue driving. Then it switched to regen in process continue driving. Would that indicate I have something heading toward failure?

Three main causes for this.

1. Lots of short trips where you don't start a regen cycle, pushing your soot level well over 80%

2. Stopping in the middle of a regen cycle too often.

3. Long periods of sitting with the engine idling.

The regen cycle takes a little bit of time to complete. It doesn't start until the engine is warmed up. You should do a longer (20 minute or so) drive once in a while to make sure the regen runs and completes.

A good gauge (Scangauge, Banks iDash, or similar) will show you the soot level and when a regen is running. Keep half an eye on it from time to time. When your soot level gets to 80%, take a drive and let the regen run.

 

[Capricorn]

I’ve got a Banks iDash and intentionally watch soot load on long road trips. At least twice I’ve seen it get into single digits then start a regen.

I figured their programming didn’t know what to do when it hit zero and just defaulted to regen. ?

Your explanation sounds better though. Is the ~750 mile regen just an observation or did you find it documented somewhere?

My observation using Scangauge with Ecodiesel JT and JL which I had for a year each. Since I have the same route and approximately same miles every week, and mostly highway, the soot level never reached 80%. So it could be either programmed to do every certain amount of miles or it calculated by engine hours. But always between 700-750 miles in my case on two different vehicles.
Some other forum members monitoring regens who drove mostly highway also experienced the same.

https://www.jlwranglerforums.com/fo...d-below-51-soot-in-the-dpf.67439/post-1879209

 

[BDinTX]

Nice! Thanks for expanding on that and the link. I don’t know how that thread slipped past me.

 

[SargeDiesel]

Regens are completely normal and should take place automatically while you're driving at above 35mph. If you start noticing more and more frequent regens, your DPF is probably filling up and getting clogged with carbon buildup and may need to either replace it or have it burned out if possible. I have no idea what this costs on a Wrangler, though I am sure I will find out sooner or later with my own, but from experience, a DPF filter removal and burn on a semi is a several day process. It take about 12 hours to remove, 12 hours to burn and 12 hours to reassemble and test, then they force it into a parked regen with a computer and if it passes, then its good to go. This process costs thousands of dollars for a semi. I would expect the process to be similar on a Wrangler, but not as lengthy, as everything is fairly accessible, thus costing less, but probably still over a grand at least. Im assuming if this becomes a requirement within warranty period that it should be covered, but God help you if you're out of that warranty period.

Other Diesel Wrangler owners feel free to correct me if Im wrong, but I'm fairly certain you missed a few regens somewhere along the line. 35K mi is a long time to go between regens. How many tanks of DEF have you filled up? The SCR system only uses DEF when its doing a regen.

On my scangauge, they show up as "passive" regens and happen quite regular. Ive only got the on dash... keep driving notice once at around 7k miles.

 

[SargeDiesel]

Are you talking about the evic screen telling you of a regen? I’m sure you’ve had a number of regens and didn’t know it.

I’m running a scanguage II it can yeh you total lifetime regens, but I used it to monitor dpf filter, regen on/off and turbo temps.

If you’re not running an aftermarket gauge it’s hard to tell if you’ve regen-ing completely down to 8% dpf

I’ve read for the health of the system you should monitor regen more thoroughly and burn down as low as possible each time.

I have the scangauge 3, would you mind taking a pic of yours showing the systems you mentioned monitoring ?

I have mine showing turbo temps and some type of regens, but I'm not really sure which one its talking about.

Not sure what the code is for the dpf or % burned levels ?

Thanks

 

[Capricorn]

I have the scangauge 3, would you mind taking a pic of yours showing the systems you mentioned monitoring ?

I have mine showing turbo temps and some type of regens, but I'm not really sure which one its talking about.

Not sure what the code is for the dpf or % burned levels ?

Thanks

Not familiar with Scangauge 3 but in Scangauge 2:
STM is for soot level in the DPF.
You can also set an X-Gauge for history of regens (TNR) - that is, how many regens it had since birth.
https://www.scangauge.com/x-gauge-commands/3-0l-ecodiesel/

 

[SargeDiesel]

Not familiar with Scangauge 3 but in Scangauge 2:
STM is for soot level in the DPF.
You can also set an X-Gauge for history of regens (TNR) - that is, how many regens it had since birth.
https://www.scangauge.com/x-gauge-commands/3-0l-ecodiesel/

Thanks, is the dpf showing the % trying to figure the 822.

These are some of the available screens that seem to deal with the DPF. I will have to look at the X-Gauges again.

Im just not sure what all the abbreviations mean.. time for some research.

 

[Grayhound]

I have the scangauge 3, would you mind taking a pic of yours showing the systems you mentioned monitoring ?

I have mine showing turbo temps and some type of regens, but I'm not really sure which one its talking about.

Not sure what the code is for the dpf or % burned levels ?

Sure thing here’s what I have showing

Thanks

 

[Riperoo]

Actually forgot that I had a BlueDriver scan tool, updated and got it set up for diesel. Lots of good info on there for sure! Now I am amazed that I have never had the regen warning pop up, guess I never went more than 557 miles with out some highway miles! Now that I know I can monitor it I will keep and eye on it! Thanks to everyone for educating me on this!!!

 

[Capricorn]

Thanks, is the dpf showing the % trying to figure the 822.

These are some of the available screens that seem to deal with the DPF. I will have to look at the X-Gauges again.

Im just not sure what all the abbreviations mean.. time for some research.

On my picture of Scangauge 2, 822F is the DPF temperature. STM or soot mass in DPF is 75%. TRB or Turbo temperature is 1014F. Turbo temperature is actually temperature of Exhaust Gas Temp 1 sensor reading which is the closest to how you gauge the turbo temp. When I shut down the Jeep, I used to make sure the TRB temp was 350F-400F. Usually it takes 30 seconds of idling to get down to below 400F before I shut the engine off to prolong the turbo life.

 

[SargeDiesel]

On my picture of Scangauge 2, 822F is the DPF temperature. STM or soot mass in DPF is 75%. TRB or Turbo temperature is 1014F. Turbo temperature is actually temperature of Exhaust Gas Temp 1 sensor reading which is the closest to how you gauge the turbo temp. When I shut down the Jeep, I used to make sure the TRB temp was 350F-400F. Usually it takes 30 seconds of idling to get down to below 400F before I shut the engine off to prolong the turbo life.

I do the same

 

[GtX]

This is screen 1 on mine.
As I recall I loaded the DPF Load manually as an x gauge. Or maybe it was something else, something was missing and I only got it adding the x gauge manually.

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