So I went to Azusa Canyon OHV park this past Saturday and beat the everloving piss out of the Runner with water crossings, hill climbs, etc. Now it seems it's time to pay for my sins. On my drive to work this morning in stop and go traffic, I noticed the truck acting funny. Whenever I would slowly accelerate from a stop, the truck would shudder to the point where i thought the engine would die. After it shuddered, it would accelerate as normal. I also noticed that it's been shifting into second at very slow speeds, like, 6 mph. I'm suspecting the early stages of torque converter troubles but I could be wrong. It's also still having the problem where it clunks a few seconds after coming to a stop. The truck has 230K miles on it and I'm not exactly easy on it so I wouldn't be too surprised if the transmission is finally kicking the bucket. Does anyone have any ideas as to what could be the problem? Could I maybe be an automotive hypochondriac and be freaking out over nothing? Any help would be greatly appreciated!