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rickinAZ

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For context, I'm retired, drive short hops only, and therefore never trigger a passive regen. The Jeep has 10,600 miles.

A few months ago my Jeep was regening about twice as often as usual and the DPF%s were bouncing around erratically, as opposed to increasing 1% at time. I took it to the dealer, they performed a forced regen, and my issues cleared up completely - frankly, I was surprised. But...I don't like going to the dealer unless there's a gun to my head.

So...fast-forward to this morning. I unpacked my new Foxwell NT510 Elite ($170 after rebate on Amazon), did a quick setup, and gave it a go.
  • Plug the scanner into the OBD (engine and key off)
  • Push the Jeep's start button twice to get to "run"
  • Allowed the scanner to "find" my VIN.
  • I navigated to the regen command. Don't recall the exact sequence of buttons, but it was intuitive. [Remember the Alfaobd intiminated me; this did not.]
  • Started the engine
  • Activated the regen on the scanner

The rpms raised to 2,500 and stayed there for 19 minutes, and then the engine returned to idle. My soot level was initially only at 50%; at 80% it may have taken longer. Unfortunately, the scanner now occupied the OBD slot so I was unable to monitor soot percentage progress and exhaust temperatures via my iDash. I switched off the ignition, replaced the scanner with my iDash cable, and, voila, DPF was sitting at 8%.

This was a stationary forced regen, not one that required driving.

I was originally going to use Alfaobd on a Windows PC (I don't have an Android device), but the instructions were intimidating, and I wanted a unit that I could keep in my glovebox.
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FarmerJenn

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Thanks for posting this! I'm picking up my '23 JLURD on Saturday and have the same issue of a short in-town commute to work with seasonal long haul interstate trips.
 
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rickinAZ

rickinAZ

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Thanks for posting this! I'm picking up my '23 JLURD on Saturday and have the same issue of a short in-town commute to work with seasonal long haul interstate trips.
Two best (Ecodiesel-centric) mods: a throttle enhancer (Pedal Monster or Pedal Commander) and a Scangauge (or iDash). Many of us have them, especially the gauge. The gauge should have been OE.
 
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rickinAZ

rickinAZ

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Could pick up an OBD splitter if you were wanting to monitor the soot %.
Good point. I would only need to plug the splitter in when I was using the scanner.
 

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For context, I'm retired, drive short hops only, and therefore never trigger a passive regen. The Jeep has 10,600 miles.

A few months ago my Jeep was regening about twice as often as usual and the DPF%s were bouncing around erratically, as opposed to increasing 1% at time. I took it to the dealer, they performed a forced regen, and my issues cleared up completely - frankly, I was surprised. But...I don't like going to the dealer unless there's a gun to my head.

So...fast-forward to this morning. I unpacked my new Foxwell NT510 Elite ($170 after rebate on Amazon), did a quick setup, and gave it a go.
  • Plug the scanner into the OBD (engine and key off)
  • Push the Jeep's start button twice to get to "run"
  • Allowed the scanner to "find" my VIN.
  • I navigated to the regen command. Don't recall the exact sequence of buttons, but it was intuitive. [Remember the Alfaobd intiminated me; this did not.]
  • Started the engine
  • Activated the regen on the scanner

The rpms raised to 2,500 and stayed there for 19 minutes, and then the engine returned to idle. My soot level was initially only at 50%; at 80% it may have taken longer. Unfortunately, the scanner now occupied the OBD slot so I was unable to monitor soot percentage progress and exhaust temperatures via my iDash. I switched off the ignition, replaced the scanner with my iDash cable, and, voila, DPF was sitting at 8%.

This was a stationary forced regen, not one that required driving.

I was originally going to use Alfaobd on a Windows PC (I don't have an Android device), but the instructions were intimidating, and I wanted a unit that I could keep in my glovebox.
So strange that you never experience or see "passive regens" occurring. On my EcoDiesel consistently all the time. On a regular basis. Whether on short trips, around town or long drives.
 
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rickinAZ

rickinAZ

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So strange that you never experience or see "passive regens" occurring. On my EcoDiesel consistently all the time. On a regular basis. Whether on short trips, around town or long drives.
My exhaust temperature never seems to get above 750 degrees (except during active regens), and it's not like I live in a cold climate. The upside is that I never have any over-heating issues.

Go figure.

When you mention passive regens, are you seeing meaningful downward movement, or just a degree or two, here and there?

Good news is that it took 10K miles to require a forced regen, and now I can do them at home - or, more importantly, on the side of the road, if the DPF acts up.

And...yes, Pentastar owners, it's an extra maintenance step, but your Jeeps won't pull a house off its foundation. :)
 
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TX_Ovrlnd

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My exhaust temperature never seems to get above 750 degrees (except during active regens), and it's not like I live in a cold climate. The upside is that I never have any over-heating issues.

Go figure.

When you mention passive regens, are you seeing meaningful downward movement, or just a degree or two, here and there?

Good news is that it took 10K miles to require a forced regen, and now I can do them at home - or, more importantly, on the side of the road, if the DPF acts up.

And...yes, Pentastar owners, it's an extra maintenance step, but your Jeeps won't pull a house off it's foundation. :)
My passive regens act more like active regens, it's a full 80% to 8% clean but the iDash clearly shows the computer in passive mode. I've only seen active push to the iDash one time when I turned off the Wrangler as it was just about to start a regen. These computers are so wonky.
 
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rickinAZ

rickinAZ

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Did you ever try an FBC?
I googled, but all I came up with Foundation for Blind Children. Roy, what's an FBC? [I'm sure it will be embarrassingly obvious when you tell me]
 

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TX_Ovrlnd

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I googled, but all I came up with Foundation for Blind Children. Roy, what's an FBC? [I'm sure it will be embarrassingly obvious when you tell me]
Click the link, Fuel Borne Catalyst. Helps with burning off the soot.
 

Compression-Ignition

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I use Better Diesel, but there are many others to choose from. I would try one and see what it does for you. If it cuts your regen times down, youā€˜ll know it works. If all of a sudden you start to see some passive regeneration when you never did before, youā€™ll know it works. If nothing seems to change it wasnā€™t a bank breaker just to see.

Iā€™ve said this before in other threads, but I think anyone who doesnā€™t see regular Highway use for at least 20 minute stretches should use an FBC. Keeps all the emissions stuff happy. Or at least it has for me.
 
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rickinAZ

rickinAZ

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I'm curious: for those that have driving practices that support passive regens, does the DPF% drop below 8%, or is 8% the floor?
 
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rickinAZ

rickinAZ

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I use Better Diesel, but there are many others to choose from. I would try one and see what it does for you. If it cuts your regen times down, youā€˜ll know it works. If all of a sudden you start to see some passive regeneration when you never did before, youā€™ll know it works. If nothing seems to change it wasnā€™t a bank breaker just to see.

Iā€™ve said this before in other threads, but I think anyone who doesnā€™t see regular Highway use for at least 20 minute stretches should use an FBC. Keeps all the emissions stuff happy. Or at least it has for me.
Thanks Roy. Great recommendation. Can FBC be used on conjunction with Hot Shots Secret?
 

Compression-Ignition

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I'm curious: for those that have driving practices that support passive regens, does the DPF% drop below 8%, or is 8% the floor?
Iā€™m pretty sure 8% is the floor. IIRC Iā€™ve seen less, but it only lasts a moment. Same with my Powerstroke, the floor of that one is like 20, but it will go to 11 for a minute or two and then snap back to 20 and climb slow.

They never show zero. When I tow a good load say 15k plus the Powerstroke will passive regen and hold at like 3-5. But never touches zero. I think itā€™s all a calculated algorithm type deal. Not like an old school float in a gas tank that reads a physical level.
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