Disclaimer:
I went mudding on saturday with the full intention of pushing my jeep well beyond it's breaking point. Mission accomplished.
Problems:
After saturday's mudding run, my XJ was flat-lined.
Transmission wouldn't shift out of first
Transfer case wouldn't let it out of 4-lo
The engine was stalling out when not accelerating
Extremely rough/high idle
Exhaust smells like crap
Solutions:
2 days of drying out
1 new TPS
2 Quarts of fresh gear oil in both diffs
3.5 Quarts of fresh transmission fluid (Probably not needed, old fluid actually looked good)
1 Reset of engine error codes w/OBD2 scanner
Results:
Neutral coasting fixed the 2-Lo problem
TPS seems to have fixed the stalling & rough idle
Drying out and/or TPS helped with the shifting, it is now at pre-mudding quality
Exhaust still smells like crap. Time will tell if I fouled my new O2 sensors...
So I still need to clean up my NSS, I was having problems with it prior to saturday. I also still need to change the actual oil. Total money spent on repairs was about $150, 45 of which was the TPS, 25+/- of that was the Transmission filter which I am returning, and that included full cases of oil & transmission fluid, which I now have enough for 2-3 more flushes.
My front diff oil was cement grey, I think because I have a pinion seal leak in the back. My rear diff oil looked really good when I pulled it, but changed it for good measure anyway.
I'm ready to go mudding again!