The car has around 111,000 miles, I changed the fluid and filter I around 102,000. The first time it had problems I was driving down the highway and it would not shift out of overdrive. Then I manually downshift, and it never would shift back into OD. That was probably three weeks ago. I have been driving it since then. 95% of the time it will shift normal, just without overdrive. Then every once in a while, while slowing down to a stop sign. It will almost want to stay in a higher gear. Then after stoping, and accelerating it will shift hard. This usually only last for a few minutes. If I turn the car off and then back on, it will usually shift normal again, minus OD. When it shifts hard, the check engine light turns on, but as it goes out as soon as it starts shifting normal again.