This started a while ago but has gotten way worse in the last month or so. When it first happened, I was driving and the car would jerk when shifting (it is an automatic fyi). Usually when I would park it overnight and drive it the next day it was fine. I eventually realized it would only become jerky when the ECO light wouldn't come on at all, even when I was driving like a 90 year old. It has now gotten to the point that the ECO rarely ever comes on, and the car is always rough when shifting, and now the check engine light is coming on for a day or so then going off, back on, back off, etc... Anyone seen this problem before? I'm afraid it is a computer issue and could be a big problem, or maybe they can just turn the ECO mode off and reset it or something.