acceleration vibration

When I turn to the right my car shakes and vibrates but it don’t do it when I turn Left I think its maybe my lower control arm. Any advice is much appreciated.

Hello I'm a newbe here, I've got a 2004 lesabre bought it about one yr. ago it has 85k mi. and now it idles rough and when I'm driving with my foot on the gas I get a vibration that I can feel in the pedal and steering wheel,also I can hear it in the dash board. My mechanic said it is not...