ok so heres my newest problem. driving on the highway about 3 days ago, no problem was nice and in overdrive, engine light came on and seemed to not be in overdrive. drove it today on the highway and definitly not into overdrive..i can feel it trying to shift into OD but it just wont go. Checked the fluid warm and it seemed ok. i alreayd had plans to get mercon V and new filter from the dealership in a week or 2. was wondering if you guys had any recomendations to check..going to get the check engine light checked tomo n see what it says..would a speed sensor be possibly bad? also it shutters slighty in diff gears but once off then back on the gas it goes away...should i start saving for a rebuild...look for a new/used tranny...or anything you guys nee me to get more info about let me know. 96 4.6 aod 112k miles...i really wish the person before me had taken care of this car im bringing it back from life support it seems...brakes, electrical, suspension (btw rockauto is amazing!!) i have no doubts you guys will steer me right!