First Diesel-Regen ?

[grootvm]

purchased ‘24 f250 6.7l h/o tremor. The exhaust filter has hit 90 and I’ve taken it out in 2 drives already, kept over 30mph for 20-30 min straight. I have 800 miles on it. Intent is to get a 5th wheel but won’t be for another year. Meanwhile it’s main vehicle. So do I take it for another drive and try to hit regen cycle, manually regen, don’t worry about it? Once it hits 100% can’t do the manual regen.

Want to take proper care of this and not get into bad habits that later plug something up or break something down. I imagine doing doing many manual regents would not be good for tuck. Am I wrong?

Went to Ford and they were not helpful. Gave me a 1-800 number. And printed out a page from service manual that had zero applicable info. Not running into much when I search threads here..could be missing a previous thread tho. Link appreciated if I did.

 

[MTUcrash]

purchased ‘24 f250 6.7l h/o tremor. The exhaust filter has hit 90 and I’ve taken it out in 2 drives already, kept over 30mph for 20-30 min straight. I have 800 miles on it. Intent is to get a 5th wheel but won’t be for another year. Meanwhile it’s main vehicle. So do I take it for another drive and try to hit regen cycle, manually regen, don’t worry about it? Once it hits 100% can’t do the manual regen.

Want to take proper care of this and not get into bad habits that later plug something up or break something down. I imagine doing doing many manual regents would not be good for tuck. Am I wrong?

Went to Ford and they were not helpful. Gave me a 1-800 number. And printed out a page from service manual that had zero applicable info. Not running into much when I search threads here..could be missing a previous thread tho. Link appreciated if I did.

It will allow a manual regen once you hit 100%. 100% on the gauge is not actual 100% on the filter, so don’t worry about that. I normally do manual stationary regens and it actually seems to do a better job than the automatic regens in that the filter % stays low longer afterwards. Either way, it will be fine. Just don’t continue to drive it for a long time once it gets to 100%.

 

[grootvm]

It will allow a manual regen once you hit 100%. 100% on the gauge is not actual 100% on the filter, so don’t worry about that. I normally do manual stationary regens and it actually seems to do a better job than the automatic regens in that the filter % stays low longer afterwards. Either way, it will be fine. Just don’t continue to drive it for a long time once it gets to 100%.

Great help. Thx

 

[Jnelli]

Get it out on the highway and drive it at highway speed for a bit! I have 2300 miles on mine and it’s never been close to 100 percent…. Lock it out of 9th and 10th gear to keep the roms up it will clear itself

 

[grootvm]

Get it out on the highway and drive it at highway speed for a bit! I have 2300 miles on mine and it’s never been close to 100 percent…. Lock it out of 9th and 10th gear to keep the roms up it will clear itself

I went for one more drive and sure enough it went into regen.

 

[cavementech]

My '23 regens when I'll at a work location idling for a while. I don't think I've ever seen my filter hit 50%.

Sometimes the truck will idle up for the transmission pressure or something like that.

Then other times it will idle up and you can smell the fuel dump during that idle.

 

[MT N8IV]

The 23 and 24 6.7's use a totally different method for regen. It used to be on the exhaust stroke injecting fuel to increase the temp. Now it uses a 9th injector. Also, the strategy in the PCM is much better now than even my 21 was. The system learns your driving, so-to-speak, and will do what appears to be mini regens without setting the regen activated PID. Further, the active regens appear to be about 20% shorter than my 21 was. Regardless, the 23 and 24 model years do a phenomenal job of DPF management. So far, every active PID set regen I have had has been due to mileage (497.1) default and not filter full. On average, the filter is between 65% and 75% full when I hit 497.1 miles since last regen.

 

[Maine Guide]

Doesn’t the truck just do it automatically? Why even worry about it then?

 

[HeavyAssault]

@Maine Guide : Yes, the active regen is automatic at roughly 497 miles since the last active regen. It's best resolved at HWY speeds with 20 minutes continuous driving.

 

[LePewPewsicle010]

I was curious what mine does so for the last two months I've been taking a picture with my phone of my diesel gauges on my dash at startup and sometimes if my DPF goes up or if it regens. I commute around 45 miles per day round trip and have taken a few 120 mile ones and my last three regens were (from previous regen +/- about 10 miles):
507 miles @ 60% DPF
407 miles @ 50% DPF
436 miles @ 55% DPF

I had previously gotten the DPF up to 75% but I wasn't tracking the mileage then so I don't know at what point it regenned from the previous one.

 

[MattR]

@Maine Guide : Yes, the active regen is automatic at roughly 497 miles since the last active regen. It's best resolved at HWY speeds with 20 minutes continuous driving.

I've been leaving my diesel gauges up on the cluster and have never seen th exhaust filter change from 0%, but assume it's doing regens. 7500 miles

 

[HeavyAssault]

2024 there has been some changes to the way Ford goes through the active regen process. I want to say they have a actual fuel injector in the exhaust path compared to the previous years. Depending on how you are driving you could be in a "passive regen" area of operations.

 

[LePewPewsicle010]

2024 there has been some changes to the way Ford goes through the active regen process. I want to say they have a actual fuel injector in the exhaust path compared to the previous years. Depending on how you are driving you could be in a "passive regen" area of operations.

I have since added a Banks idash datamonster and my MY24 does a lot of passive regen if you get on the throttle a lot but will go active once the DPF regen % reaches 100% on the gauge. That can easily be seen with the EGT and the regen active PID. This doesn't coincide with the factory DPF % in the gauge cluster as it has gone back to 0% before my idash even shows it is in active regen.

 

[HeavyAssault]

Given the 2023+ trucks have changed it seems we need a few people to collect data to affirm what's going on. Usually passive regens are just due to how you are using the truck. There's nothing "directed" by the PCM so to speak. Past history showed passive regens happen in a wide range of 575*(???)F to 1000*+ EGTs. The results of passive regens are easily seen by those towing something. Day-to-day driving without a load it's hard to say what's going on.

 

[LePewPewsicle010]

Given the 2023+ trucks have changed it seems we need a few people to collect data to affirm what's going on. Usually passive regens are just due to how you are using the truck. There's nothing "directed" by the PCM so to speak. Past history showed passive regens happen in a wide range of 575*(???)F to 1000*+ EGTs. The results of passive regens are easily seen by those towing something. Day-to-day driving without a load it's hard to say what's going on.

So just pulled more data after witnessing what I believe were some "passive" regens or maybe semi-active? My commutes (~20 miles each way mostly on the highway) are pretty consistent with less traffic in the morning and more in the afternoon due to my schedule. EGT3 will usually max under 600 deg but occasionally it will spike for no apparent reason. Sometimes it happens when I am accelerating to highway speed, sometimes I am already going 60-80mph. When it does happen, I can see my EGT4 and EGT5 sensors go over 500 degrees and a subsequent drop in soot load. Today it happened when I was already going highway speed and you can take a look at the data yourself.

 

[HeavyAssault]

@LePewPewsicle010 : The 2024 motors have a different process now with the addition of the 9th injector for Active Regens. If you can monitor the actual start of an active regen that would be a good benchmark to use. Seeing that data on the chart would be pretty interesting.

We know there's passive regens and active regens. Semi-active MIGHT be something that happens with the new process on the new motors.

 

[speeddev]

Also, you can attain higher EGTs using ECO as the drive mode during regen as the truck will be typically in a lower gear (higher numerically) and result in a greater load on the engine.

 

[Cux211]

@LePewPewsicle010 : The 2024 motors have a different process now with the addition of the 9th injector for Active Regens. If you can monitor the actual start of an active regen that would be a good benchmark to use. Seeing that data on the chart would be pretty interesting.

We know there's passive regens and active regens. Semi-active MIGHT be something that happens with the new process on the new motors.

Good to know, my 22 regens every 500 miles like clock work regardless of % full

 

[LePewPewsicle010]

@LePewPewsicle010 : The 2024 motors have a different process now with the addition of the 9th injector for Active Regens. If you can monitor the actual start of an active regen that would be a good benchmark to use. Seeing that data on the chart would be pretty interesting.

We know there's passive regens and active regens. Semi-active MIGHT be something that happens with the new process on the new motors.

Here is my last active regen of all five sensors. I wasn't logging the active regen or soot load PIDs when I sampled this so I don't have exactly when it started but you can see EGT3 spike and remain higher than EGT2 while it was cooking instead of tracking with it. It would appear that when EGT3 and EGT2 deviate something is actively going on. I am due for another active regen one next week sometime with regen status at 72%. Any other PIDs you want me to log?

 

[HeavyAssault]

@LePewPewsicle010 : Is that 8 minutes??