any ideas please , i have a focus st with vibration under power in all gears if you let off the gas it goes 99%, last year i changed both drive shafts front wheel bearings and new hubs as the old would not come out of hubs even in a ten tonne press, the vibration was there before they were changed and the new shafts made no difference, also new tyres with tracking and ballance

 

Is you diff in the gearbox ok??

 

not checked ! but i have no leaks or no noise from box

 

Are your wheels buckled can still be balanced but wouldn't cure a buckle.try swapping the fronts for the rear wheels.

 

When I had the news tyre fitted ,they said that they had swopped them front to rear . But I think that I will swop them anyway and see what happens

 

Are the front suspension arm bushes ok?

 

im having a very simular issue,

have change all mounts etc but when i put my foot down in the first 3 gears the car vibrates and feels like something will break any ideas ?