Diesel Laptops Handheld Heavy-Duty Diesel Diagnostic Scan Tool with DPF Regen

[Neal]

I just checked my diesel laptops tool while sitting here at Gaffney awaiting service tomorrow. My data stream soot threshold is 79%. Not sure what that means. Is that some level at which a regen will occur or is that my current level? And is this out of 200%? Still trying to learn when and if I should do a parked regen.

 

[Rich W.]

I just checked my diesel laptops tool while sitting here at Gaffney awaiting service tomorrow. My data stream soot threshold is 79%. Not sure what that means. Is that some level at which a regen will occur or is that my current level? And is this out of 200%? Still trying to learn when and if I should do a parked regen.

Ive been saying parked and forced regens are the same thing up until a couple months ago when I discerned a slight difference. I now understand that parked regens are when the rig is calling for it (HEST and/or the DPF lamps lit), perhaps because you’ve interrupted an active regen, or maybe just because the soot level has built up to that point. If you are a trucker you park and flip the switch on the dash and regen away, but since we RV’ers can’t be trusted with such conveniences we would have to resort to the shorting plug. Forced regens occur when you use some external device such as the DLHH or any other adjunct that can initiate a regen through the J1939 connection whether it says it need it or not.

So. Since your’e at 79% soot load (yes out of 200% as I understand it) but you aren’t getting the audible “ding” or any indicator lights (HEST, DPF lamp, etc) on the dash, you’d have to do a forced regen to clean it out, which is fine because you can. And if I noticed I was at 79% I would do it too.

According to the cognescenti over at OTR you can’t hurt anything by doing non-demanded regens early and often, and in fact the more the better. For truckers they suggest monthly forced regens. I put it on my calendar as a monthly reminder, but when I’m not driving much I obviously dont bother. And even when I am driving a lot, if the majority of my driving is freeway (highway, four lane whatever) I still don't bother. But if I drive a lot of back roads (which I prefer) or end up driving through a lot of towns resulting in a lot or stop and go driving, I do my forced regens periodically.

So in your case Neal, I’d do a forced regen. Turn that soot into ash and keep your DPF happy and healthy. I don’t like waiting until the ECM demands it because then you are under a time constraint to get it done before you start down the derate path, which is never fun.

 

[Neal]

So much for trying to use the right term haha!

My question though is what is the 79%. I think we learned that 100% isn't the top end.

I'm just trying to monitor the value but I'll likely do a forced regen if when I get home I don't see a change in this value in the right direction. I want to see the system doing its own thing but have no problem cleaning up when needed for safe keeping.

 

[Rich W.]

So much for trying to use the right term haha!

My question though is what is the 79%. I think we learned that 100% isn't the top end.

I'm just trying to monitor the value but I'll likely do a forced regen if when I get home I don't see a change in this value in the right direction. I want to see the system doing its own thing but have no problem cleaning up when needed for safe keeping.

I just edited the above - its my understanding as well that 200% is actually 100% for whatever reason so 79% is actually 39.5%. Makes perfect sense, right? You probably will see lower values after a good freeway run on the way home and that would be a good system test. And if its in active regen and you interrupt it you’ll know. So this would be a good test case.

its crazy that we are still adapting to all this and I was thinking the other day that it would be nice if the chassis manufactures got together with the EPA, engine manufacturers, component suppliers, DEF producers, etc and published an honest, factual document that lays out the actual indisputable facts about each iteration of the emissions systems so we would all have a set of facts we could count on instead of relying on guessing, trial and error, and the internet rumor mill. And dealers could provide said document at the time of sale so consumers would be fore-warned and informed. Instead we have the exact opposite and are still playing guessing games with stuff that can leave us stranded. Oh well, there’s some Makers Mark calling to me so… rant off. Cheers!

 

[truckingrepairz]

I would recommend for everyone to get one from dieselscanners. I had one from Autel and it broke within a few months and the battery would barely last me. This one works super well and never had any complaints about it, works better than any other scanner I have owned.