my car has been doing this lately, since almost 3 weeks and i cant figure it out! i havent drive it since then...it shifts really hard from N do D or R! its really hard the engine is about to fall lol...i first though its the TPS but i took my friend's maf, tps and its still doing it..could it be engine mounts or U joints?? it drives fine and shifts okay but i can still feel a slight shift at all gears..and a slight clicking sound that comes and goes..like a loose metal or something! what to look for?? thanks