What kind of vibration is it?
The guy whom you are replying, never explained what of vibration he is talking about. My Car also vibrates when I start it, drive it and when I go over stuff but it stops when I turn it off. What are you guys talking about?
Is it engine vibration? when you rev engine in neutral gear, do you feel the vibration? (if not than spark plug, fuel pump, catalytic converter, Oxygen sensor wise you should be good)
Is it load induced vibration? If you are experiencing alot of jerkiness when you start moving from a stand still position than its a pressure plate issue.
Low gear oil or bad gear oil.
If the vibration come on after a certain speed, there could be a lot of reasons behind it, important thing is how you feel it, is the vibration travelling in car body or you notice in the steering wheel:
Could be bent wheels/rim
Out of balance tyres. (uneven tire wear will point this out)
Bad tire or bent tyre.
Bent steering rack.(uneven tire wear will point this out)
Bent tie end or rod or both. (uneven tire wear will point this out)
Whole steering rack might be bad.
Shock absorber might be bad. (uneven tire wear will point this out)
Bad wheel hub or play in it.
Bad engine mounts
Does you move in straight line on a straight road or pulls to either sides.
