acceleration is rough on highway!!!

[dabs004]

Hi All,

I had my upper engine mount changed due to major engine movement. Now there is less movement over bumps at lower speeds but when I get on the highway, and go over a bump car accelerates rough. Also when acceleration and turning wheel to follow highway it drives rough.

What can be the cause?

I had both struts, springs, lower control arms already serviced.

Thanks in advanced

S80 2000 2.9L