So recently I was on my way to work and I noticed that my car was shifting funny. Well it started off with what felt like the timing of the shift was off. Later that day after work I was leaving and as I was leaving it was no longer about the timing of my shift, it had turned into a very hard jerky type of shift. So hard I turned around and didnt want to drive it anymore. Got it to the dealership thinking the worst, but it turned out to be a transmission temperature sensor. Which from what I was told is pretty common on the Optima. I just wanted to know if any of you have had any of the same problems and have had to have your sensor replaced.