Stationary Desoot with AlfaOBD

[Mike Wenrich]

Gotta ask the dumb question. If the system does it's own regen, why do you need to do a stationary regen? On my 2014 I have never seen it regen that I knew about. Might have missed it while driving as I tend to watch the road more than the gauges. That's if there is any gauge indication on my model. Is there any way to know how many it has gone through or does that require one of the Alfa units?

 

[sag2]

It really does not need a manual regen as long as the truck is working and it has no fault codes. It is there for trucks that are used in stationary duty (PTO) or for service technician after a repair that kept the regen from happening.
But is isn't going to hurt either, just burns fuel and makes heat.

 

[Newsa]

The alfaobd stationary desoot is a nice feature to have. Once in 7 years, I had to take it to the dealer for a stationary regen because (as the dealer noted) my truck had not received all the emissions RRT flashes. I had to pay for the flash because it was out of 3/36 warranty, however, the stationary regen was covered by the emissions warranty.

Someone with WiTech has previously said that the alfaobd stationary desoot is different than the stationary regen that the dealer does. I don't know what the difference would be, tho?

Probably some of those rams used for Fire/Rescue need an occasional stationary regen-type maintenance

 

[AH64ID]

Gotta ask the dumb question. If the system does it's own regen, why do you need to do a stationary regen? On my 2014 I have never seen it regen that I knew about. Might have missed it while driving as I tend to watch the road more than the gauges. That's if there is any gauge indication on my model. Is there any way to know how many it has gone through or does that require one of the Alfa units?

The main benefit of a stationary desoot is that you don't get the cooling from road speed so the outer portions of the DPF get hotter and better cleaned. It's not a huge deal, but I have no plans to delete the DPF and want it to last as long as possible.

AlfaOBD doesn't have a way to show number of regens performed, but they occur every 24 hours of engine run time at a minimum. Divide your total hours by 24 and that's the minimum number of regens your truck has done.

Your 2014, like my 2018, will only show you a regen if the DPF gets nearly full and it needs you to alter your driving style to complete a regen.

 

[Mike Wenrich]

Good to know. I try to not drive short runs with this truck after all I have read about it not being a Grocery Getter. I had the recent problems with the upstream NOX sensor (twice) and after 1,000 miles the replacement had a lot of soot on it. The tech said the sensor was not getting the signal from the module (a Dorman product) and we replaced it with a Cummins sensor. Not quite another 1,000 on it yet but trying to get to that and more mileage so I can return a faulty module/sensor. Tough finding reasons to drive during this pandemic. I want to update my post with this problem but also need to make sure I have some clinical data to go with it. Thanks to you and Sag for answering my question.

 

[Minnow101]

And very generic.

Kinda like "it might rain but then again it might not".

 

[JR]

Finally got around to my annual desoot. I was holding off as long as possible before dropping this oil but it was time. 11,763 miles, 274 drive hrs, 31 idle hours. I keep intending to track the hours prior to harvest but it never materializes. I'd wager close to half of those idle hours are accrued in a matter of a couple of weeks. Other than that specific time frame my truck never idles. Even during the winter months - it gets plugged in regularly.

I got a good laugh when I brought out my notebook to log my maintenance today. Oil change was 12 months TO THE DAY! I was sure I last dropped it the first week of November....turns out I was off a bit

As the regen was taking place I commenced to cleaning out the inside, it was a muddy mess from dragging wagons in and out of the fields over the last few weeks. About half way through the desoot I noticed smoke rolling out from under the truck
i poked my head under and sure enough the exhaust was burning off the Wool Wax (Fluid Film) I applied ~ 3 weeks prior. The area around the radiators/coolers got so warm it started dripping off in a few spots. I'm expecting to have to go back and do some touch ups. Lesson learned, do annual regen prior to annual undercoating! Last year I did things in opposite order.

Curiosity got the better of me and I broke out the IR gun, despite the high EGT's the surface temps of the majority of the exhaust didn't exceed 350*F. Some spots were considerably less. There was a couple of exceptions at the flanges, etc. Those catalysts are very well insulated. Also the oil pan was under 200*F. I was surprised at this but then again the engine really isn't working during a desoot.

 

[AH64ID]

Did my 2nd annual one yesterday.

60 minutes on the dot.

My latest ECM update seems to run the fan more during the desoot as my coolant temp stayed lower.

Filled up right before and after. It took ~2.2 gallons.

 

[slowmover]

I'm not sure if you can monitor or not? I started the de-soot but was afraid to change screens or anything in fear that it might abort the procedure so I just let it do it's thing. The procedure screen in alfa is pretty generic, it just says started or something along those lines and you hear the engine rev up a little. There are no gauges or anything fancy.


.

Similar to big trucks post-2012. With weed burner exhaust have to park far away preferably on concrete.

Newer the truck (2018+) the less likely a manual regen called for.

On a typical summer day with 24-run time on an ISX Econo 15L, one hears the burner pushed up every 4-6 hours of highway time. (Not exact).

Consumption tends to be 2-3/gals per 600 in the work I’m doing now (no idle time restrictions).

If parked running several days, an extended burn is initiated but it isn’t the hour long type.

Idle is at 850-rpm when parked. 600 in gear.

 

[Cummins12V98]

It really does not need a manual regen as long as the truck is working and it has no fault codes. It is there for trucks that are used in stationary duty (PTO) or for service technician after a repair that kept the regen from happening.
But is isn't going to hurt either, just burns fuel and makes heat.

My 15 has 85k and still under warranty til February. Tow heavy for 1/2 my miles and most trips are 5 miles or longer solo. Should I do this as my Son is with me and has what's needed to do this. What would you do?

 

[sag2]

It can't hurt, but really isn't necessary.

 

[Cummins12V98]

It can't hurt, but really isn't necessary.

Thanks. The Dealer said my tailpipe looked like one on a near new truck. Not sure if that is true.

 

[sag2]

It should be perfectly clean of soot.

 

[AH64ID]

It can't hurt, but really isn't necessary.

My thoughts as well. Certainly more of an "I can" than "I need".