joem

Well, I did it- picked up a 2011 4th gen (after owning several 12v's) so, knowing nothing (about 4th gen's anyway) jumping both feet in first found a longhorn long bed in great condition with 200K on it and picked it up. Completely stock right down to the DPF- so what issues should I address? The owner said he had the O2 sensor triggering check engine lights but that's the only issue disclosed.
Thanks guys, Joe- Fresh out of the 2nd gen thread

joem

1. is the hpfp known for any issues?
2. How can I tell when the truck is in regen, don't want to shut down with 1200+F EGT's and
3rd, what oil? With it sending regeneration heat threw the turbo I assume mobile 1 tdt 5w40 is best?
Thanks, Joe

SOhappy

If you are able, I would do the emissions delete since your warranty is long ago expired. The 2010-2012s run much better without the EGR & DPF. Deleted, it should be great truck and serve you very well.

joem

I plan to, just curious on other bugs mopar tends to have Love your location, I am kinda a hoe- as long as she is hot anyway

BobTipton

I'll second the deletes. Just got all the parts delivered today - goes into the shop Monday to have the deletes done. Got the DPF 80% full message twice in one week. Replacement DPF costs as much as everything needed for deletes, and would need to replace again in the future, so it was a no-brained for me. Truck has 90k on the clock.

As far as knowing when it's in regen, I can tell by the engine sound and smell when it's in an active regen. Throttle also seems a little 'touchy'. Get no messages in the EVIC.

Regards,

Bob

joem

im pretty sure he sold it due to getting tired of chasing codes- i knew this going into it but holy cow- codes keep coming back! Living in a state with mobile EPA reps doing random inspections when visible smoke is seen I wanted to hold off on a delete but after blowing a complete weekend with EGR and O2 sensor codes plus $130 for O2 sensors and another $80 for a manifold pressure tube that was clogged solid I think I will be doing that delete sooner than later

1-2-3

I chased codes for a time on my 12. Lots of digging, lots of reading. Only replaced the MAF sensor as it actually did test bad. Then one day.....I opened up all of the O2 sensor connections. Dirt poured out. Flushed them out with contact cleaner and all codes were gone. The did come back once, and I flushed them again then added dielectric grease. Been code free ever since. Certainly worth the small effort to open yours up, flush them and add dielectric grease. Just a small amount. Too much and you can't push the connector back together.

joem

cleaned and greased the large connector on the side of the frame, and also the 2 that connect to the new o2 sensors, still set P0138 within a minute of startup. none were dirty- contacts nice golden looking. Are there more? The transmission was replaced by the previous owner as well.