ok my car started acting up and was no going into second gear it would just stick in first and will bearly go any were. and i would loose reverse. so now i drained all the fluid did not see any metal pieces but the tranny fluid was pretty gunky so i replaced it with fresh fluid, and put a new filter on. test the car out and it is still not shifting into second. so what could be some probs do i need a new tranny or a new torque converter help me out please.