rvray

I have had several Lexus over the years. This one is a 1995 SC 400 with just over 90,000 miles. It has had all the motor mounts replaced. It has a shudder when driving specially when you let off of the pedal then re accelarate, seems to be comming from the bottom center of the car. Any suggestions? The car has a very good local maintence history no accidents etc.