Is it possible that an exhaust manifold can make a car shake or vibrate. Coz I've replaced all of my mountings, front of motor, rear and transmission mount. Still vibrates. Please help. I've tried all I can. Knowing its an old car I've replaced a lot of new parts. Especially the suspension, today I even replaced the lower control arms thinking they to may have a role in the vibration. It is worse when I reverse.