i was coming home today, and all of a sudden i notice that my tranny is slipping when i go past 3000 RPM. i don't know what is going on. when i accelerate, the car moves until after 3000 rpm where it feels as if the torque converter is not locking up and the car is not pulling at all after this point. also, now, when i almost come to a complete stop, the tranny makes a clunk sound. does anyone know what is going on here?? please help..