Alright, my tranny seems to work right most of the time. This is why I believe that this maybe a solenoid problem. I've noticed that my car has started shifting hard from 3rd to 4th. I've seen it go into 4th gear climbing a hill which is very strange to me and it causes it to bog.

It also seems to bog the motor at times when it is in 4th in very low rpm, high torque situations. (i.e. going down the road at 35mph to 45mph) This bog creates a real bad shake from time to time. You actually don't feel this bog while the car is cold.(That could be because the computer runs the car at a higher rpm when cold though)

This could be a miss true enough. I've replaced plugs, wires, FPR, and fuel filters. My next move will be the coil packs.

There is no codes from the diagnostic in the car.

Any suggestions or opinions.