Hootbro
Well-Known Member
Thanks, checked both upstream O2 sensors and they are dry with no oil indication.If you had a leak in the PCV system check out the No. 2 (downstream) o2 sensor on the passenger side. If the oil leaks out of the pcv system it can drop on that o2 sensor, and believe it or not it will soak into where the wire connects to the actual sensor and kill it. That happened to mine. Now that the cam has been replaced, software update, and new o2 sensor everything is fine.
FWIW, after the PCV hose change, the Bank 2 misfires on cold start with primarily cylinder #4 have started to creep up again. Gone about two weeks then got ESS disable message again and a pending P0300.
I have not taken it back to the dealer and until I get a hard CEL posting and not a pending, I cannot get them to apply the TSB that changes the RH intake cam.
That being said, I am a subscriber and watcher of the YT channel "Scanner Danner" and he recently had a video on a Durango Pentastar 3.6 that had a cold start misfire. That wound up being a bad spark plug but he also mentioned having worked another Pentastar that had a run away #4 cylinder misfire they could not figure out until they reset the adaptive learn memory and that fixed that problem. So yesterday with both a scan tool and pulling the battery cables for an hour +, reset the memory and had a cold start this morning with 0 misfires detected. Once again, not getting my hopes up but just will monitor and have that as another data point.
I am half tempted to just order a Mojave and move on.
Sponsored