I drive a 2000 civic si and I've been having this problem for over a month now and still havent fixed the problem. My car shakes when i accelerate and not when i am decelerating or in neutral. I was told it could be my driver side hub bearing and so i bought a new one and had it installed. For some reason the shaking is less severe but is still there. I've been told it could be the motor mount or rotors. But i've been told my mounts are still good. The shaking is noticeable while climbing around 3 to 4 and gets worse while rpms get higher. Any suggestions??

 

tierods? check those.