I'm still learning my truck, 19 XLT, 6.7, Sync 3.

Can I activate the DPF filter % on my screen on my trim/pkg level? Is this done thru Forscan?

 

satz28406 I think the DPF screen can be activated with any trim level and yes it is done with Forscan.

 

So, have had a couple of Regen's in the past couple of weeks, all highway miles and getting 500 miles between regens. Problem now, seems that it's taking just over 40 miles to complete at highway speeds. It is going all the way down to 0% when it's complete, but it gets to that level and keeps regening for quite a while longer. On Forscan, it shows that the soot levels are down to about 12% at this point. I can see one regen taking that long if the system seems to think that it needs an extra long one to really clean it out, but 2 in a row seems like it's getting excessive.

By the way, if didn't have the Forscan, would not know for sure that Regen had even started. Only indication that getting other than this, is the instantaneous fuel mileage is going down to 10-12mpg's. Turbo boost actually drops way off to almost 0.

 

I personally think Ford dropped the ball when they didn't place an idiot light into the gauge cluster to let the driver know when the truck is regening. Welcome to FTE. I see you have a 5'er so you should see some passive regeneration when you are pulling it. Passive regens happen when the EGTs get up to at least 572 degrees F. I read that in the booklet that should be in the coffee book sticky in this section. It means that the exhaust is hot enough to cause the soot to burn as you're driving without an active regen. With you towing the 5'er, it should be possible you may go over 500 miles. I have 3 documented regens that I went over 500 miles when I was on a road trip and nothing in tow on the highway.

I monitor PIDS on a Banks Power iDash 1.8. Through the most recent updates, my SOOT LOAD % PID now works. I have been seeing passive regens in my expressway driving to and from work, usually going home as the altitude increases as the hills which are part of the Appalachian Mountains start just south of the City of Buffalo. So climbing those hills help get the exhaust hotter. I monitor EGT1 and EGT4, after turbo down pipe and after DPF. I think the additive I use helps out as even though the EGTs were only low 500s, I saw the % drop a little. My regens are usually 18 miles but I have seen them as low as 15 miles and some over 20 miles. And if no one ever told you, if you are in a regen and reach your destination, put the truck in park which will turn off the regen off so excess fuel isn't dripping onto the pistons and getting into the fuel. I usually like to let the truck idle at least a few minutes to burn off the excess fuel in the combustion chambers after the regen stops in park.

I have no idea how the 17+s work with the regen length but it seems all trucks are different.

 

Dave, I thought the DPF had to be closer to 750* F for passive regen to take place. I have never seen any actual values in any of the Ford workshop DVD's I have. Does your truck do passive a this low temp?

 

Chuck, starting on page 77 of the 6.7 Power Stroke booklet PDF file here, the Exhaust section starts. On page 81, it talks about regeneration. From that page,

Passive Regeneration

Passive regeneration takes place when exhaust temperatures exceed 300°C (572°F). This process does not affect engine performance and is transparent to the driver.

It must be true because I am seeing slight reductions in the percentage when I'm driving home and going uphill. It builds up when I drive to work. I'll post more info as I have been writing the numbers down and I learn more on how it works. My EGTs have been in the low 500s like 530 to 540 or so, and she has been passive regening. It seems like when EGT1 post turbo temp goes up, it takes a bit for EGT4 to get as hot as I am not towing anything. The guy I talked to from K100 said they have something in the additive for the DPF so I wonder if this is what is helping the soot burn off when she gets up into the low 500s. I can't say for sure.

 

That's interesting, I always thought the temps for passive regens were in ther 700's like Larry.

This might explain why I see small drops in DPF soot percentage while towing around town on occation. I don't watch what the truck is doing most of the time, only on occasion do I pull up torque pro and check it out. I do see 450-500 mile distances between regens so the combination of pm-22 and bio fuel is keeping my DPF happy even though I do a fair amount of idling and towing on city streets.

 

That's what I thought because I got it here on the forum. Actually glad it's lower than 700 because at least I get some passive regeneration happening without towing anything.

 

Dave, thanks for the the info....

 

I'm glad I can return the favor. You sure post enough info. I'm just glad my soot load PID is working so I noticed what was going on. That's when I saw the lower temps so I checked out the 6.7 Coffee book. Hmm, who knew?

 

Okay, my truck is close to a regen. The soot load is at 95.9% so I will be able to post the figures from the iDash when it regens. I updated the iDash software on the night of 09/29/19. When it first booted up, it said it was at 27.4%. The next day it went to 54.8%. I don't have an explanation for that as I didn't see it change. I did drive my truck 6 miles on 09/30 to warm up the oil before changing. There's no way that it went up almost 30% in 6 miles. I'm sure those 6 miles added some but it had to be closer to 50% when I first started to drive it to warm the oil.


On 10/3 after a fuel fill up, I was at 74.5%. On the expressway home, dropped down to 70.1, then to 69.6, then to 68.5, then to 67.9. When I got home, it was back up to 69.6. No EGT temp info taken at that time.

On 10/04, I started from work with 80.5, went up to 81.1, down to 80.0. EGT1 was closer to 600 and EGT4 was 550s. I got home and it ended at 81.6. One way trip is 18 miles...

Today, I started home from work with 93.6 and dropped all the way down to 89.3 on expressway. EGT1 was high 600s and 4 was low 600s. I went past my exit and went two exits south to get off. I was coming down a steeper hill in 3rd I believe. EGT1 was in 400s and EGT4 stayed hot at 600s. I was off the throtttle and passive regening down that hill because 4 was still hot. WILD! It stopped passive when 4 dropped back into the 500s. Then it started to build back up to 95.9% when I got home. Like my friend Bohen said, it's a roller coaster ride with what the DPF does.

This is all been recorded in about a 230 mile range...approximately.

 

I am really gonna have to spring for the i dash. I don't have any of this behavior in mine and my regens are always so much shorter. Makes me wonder what my EGT's are.

 

My last regen was 15 miles which I have seen before. I write stuff down on my left palm so when it regened, I forgot to mark it so I could not read it after I washed my hands (it's a cop thing). I don't tow so I don't expect your truck to act no where near like mine. You are always pulling stuff so I imagine your emissions are in good shape because the exhaust is always got. Just an observation.

 

It would be interesting to read trip details from your truck adventures both unloaded and hauling the fifth. Your truck is still running the 2013 factory firmware correct? I'm going to predict your peak EGT4 during an AR is north of 1,200°F. Mine use to reach around 1,200°F on occasion until the "emissions" update Ford released in either 2013 or 2014 (I can't remember specifically). It was that update that changed the shutdown behavior when any one of 4 EGT sensors failed. This update decreased MPG by 1 per tank on my truck and AR temps were 100°F cooler.

 

Mine usually get mid to upper 1100s for EGT4. But recently I have seen mid 1200s when I'm regening and climbing the hills on the expressway.

Update: I started from home with 96.4% and climbed as follows: 97- 97.5 - 98.1 - 98.6 - 99 - 100 - 101 - 102 - 103 - 104 - and ended at 105 when I parked at work. Since I thought I was at the cusp of one, I told the crew I was taking a quick drive and off I went. It climbed up to 107 then when on the expressway and EGT4 got in to the 500s and up, it came back down all the way to 102%. It became apparent to me it wasn't regening, I got off and headed back to work. It was at up to 109 when I parked back at work. With the ending mileage, I was probably about 410 miles or so since the last regen. This has been a learning experience being about to watch the EGTs and the soot load % at the same time. Apparently it doesn't regen automatically at 100% or at least my truck does not. The Dash Mileage was still at 14.6 mpg when I got off the expressway in the city.