Car Shaking at stop light

My Celica 90 GT 2.2l has a shaking problem. No shaking in motion and in neutral, just when stop at red light. I changed new plugs , new set plug wire, new rotors, new front engine mount but it still shake. Please help :banghead:

your idle may be too low, check ur idle screw.

idle, alternator, fuel pump, i dunno other than those that might cause a shaking