2.5v6 engine wont accelerate keeps bogging down like a timming problem------please help

Have you had the timing checked? How about the throttle position sensor? Check the trans fluid pressure? When was the last time it had a tune-up? Have you had the compression checked and the cooling system pressure-checked for leaks in the head gasket and lower intake manifold? Any of these problems could be causing your issue. The 2.5 isn't a bad engine, but there are many possible issues here. Your timing belt could have skipped a tooth.

ask your mechanic to check and see if you have a bad map sensor.

before going too crazy (and i now see this is a very old post) get the plugs checked... it could be something as simple as that...