[AT] EcoDiesel update

[Stephen Offiler]

I'm going to make a few comments that Dennis certainly knows already.
Perhaps not everyone on the list knows this stuff however.

DPF is the Diesel Particulate Filter.  Traps particulates, aka soot; in
other words, the stuff we see and smell out of old-school diesels.  The
soot is reburned down to a very fine ash (called the DPF regen cycle) and
that ash remains inside the DPF.  After a while, it will fill up with ash,
and require some kind of service.  Either the whole unit is opened up and
cleaned out, or it is replaced.  Not sure how Ram handles this.  I'm
wondering what Dennis means by "rebuilt" exhaust.  (I could make a pretty
good guess, but, I'm not passing any kind of judgement here).

As for exhaust temperatures, I'm certainly not going to argue that letting
it cool down below some value such as 300F is a good idea.  But I wonder
what Ram has to say about this, if anything, in the owner's manual.  Same
issue with recommended oil.  People mention synthetic (whatever that means)
and yes, certainly, a high-quality high-temperature-resistant oil is a
great idea.  Again, what did Ram have to say about this in the owner's
manual?

These engines are very expensive, and Ram most certainly doesn't want
warranty headaches.  Anything they can possibly do from an
engineering/engine-control standpoint to avoid warranty issues and extend
engine life, would not "expire" along with the warranty.


SO

On Tue, Aug 30, 2016 at 9:38 PM, Dennis Johnson <moscowengnr at outlook.com>
wrote:

> My Ram EcoDiesel let me down a few weeks ago at about 111,000 miles, the
> evening before I had planned a trip.
> The "need to regen the DPF" light came on for a minute as I was parking. I
> stopped to unload something, and then restarted. When I restarted it
> immediately went to the "DPF full - go to dealer with $$$$$$" message, and
> was in the "Limp mode" of 35 MPH max, and not up shifting much.
> Got back from trip and I decided I needed to do something different, so I
> sent my ECM of to PPEI to repair/update it, and then had the entire exhaust
> system "rebuilt". Got things back, and finished installing stuff yesterday
> and today. First test drive seems to have improved mileage a little bit.
> Will know more after a little time and a few more miles.
> Also installed an "EDGE" brand engine monitor that gives several things
> from the OBDII port. It is an impressive digital gauge set. It might also
> be able love to read or clear codes, but I need to read more of the manual
> to figure it out.
> This system came with a separate thermocouple for EGT, but I have not
> installed it yet. After seeing there is factory data, not sure that I need
> to drill another hole to get a second data point.
>
> Exhaust gas temp 1  (assume turbo inlet) - running 750/770 at 70 MPH, over
> 1020 F at full throttle and 25 PSI boost for a little bit. Runs 300/325 it
> idle.
> Exhaust gas temp 2 (assume turbo outlet or DPF inlet)  - running 200/203
> at 70 MPH
> Trans Temp
> Speed
> Gear engaged - really nice to see - this is something that was lacking
> with stock gauges.
> Coolant Temp
> Oil Temp
> Boost, - running 11-14 at 70 MPH flat ground, up to 25 at full throttle
> Soot % ???
>
> Does anyone have any good ranges for these parameters, especially the EGT
> 1 and EGT 2
>
> Let me know??
>
> Now, next thing is that 111K may be close to the limit on the original
> turbo. Looks like it is leaking oil into the intake, so that may be the
> next project.
>
> Thanks,
> Dennis
>
>
> Sent from my iPad
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