Vibrations XJ308 3.2
 

Can anyone advise please the problem is severe vibration when starting from cold, the car starts instantly and responds to the throttle, but vibration is present and rocks the car, the car if engaged into gear the problem becomes worse and it will not drive, left running for about 15 mins and its ok.

Once warm it responds ok and can be driven all day no error codes, plugs have been changed, it was serviced 6 months ago, a air leak was mentioned and new manifold seals have been put in place the problem still exists.

A throttle body problem was mentioned i have cleaned this to no avail

Any advice would be most welcome

You have posted in the wrong forum. This one is for the aluminium-bodied cars from 2003. Your car is the previous steel model and it totally different. Try posting in the X308 forum