Originally posted by Mr White
I'm not sure about your acceleration problem but the braking might be due to warped rotors.
Maybe have someone check that out unless someone here can think of something else.
warped rotors you'd feel in the steering wheel.. he said it's kinds surging back and forth when braking.. sounds like the tranny is going, especially with the car shifting rough.. also may want to check the tranny fluid
edit: nm.. re read his post.. it could very well be warped rotors.. fairly inexpensive compared to the tranny