HAD TOP MOUNTS AND TRACKING DONE. STEERING FEELS A BIT STIFF.

What year is this Focus? First you need to work out what the "Clonk" is. Is this clonk only as you turn or does happen when you hit pot holes? The most common reason for a steering/suspension noise is one of the joints on the system. Get the bottom ball joint, the track rod ends and the drop links looked at.
If your car is before 2011 check the fluid level in the power steering. After 2011 they changed to electric power steering. Sometime the stiffness is that easy to fix. If you need to top it up only fill to the MAX line. After topping it up, With the engine running, turn the steering all the way to the left then all the way to the right and repeat it 3 or 4 times. This bleeds the system.
If the joints are all OK you need to look at the actual steering rack.

a vibration felt through the throttle pedal would suggest to me a suspension issue , these type of symptoms are sometime hard to trace but your doing the right things ,make sure the new tyres are balanced correctly and i'd have the steering tracking checked at the same time, it could be drive train related but i'd get the suspension mountings/bush's , top/bottom ball joints , even engine mountings checked as your feeling it through the pedal , how is the steering, is it affected by this vibration? keep me posted if you wish

this would be a costly exercise , more than the car is worth ,what are the probs with the power steering?

You are possibly low on power steering fluid. Check the reservoir and top it up as needed. You will need to do this again after a short while, as air works its way out of the pipes.
Then you should think about why it got low to start with. It is possible the power steering gear has sprung a leak somewhere. A common place for that is the steering rack end seals.

This is really annoying, happens with most Defenders, but is easily fixed. It is the steering damper. They are never strong enough. Best solution is to fit an additional damper onto the track rod. Remove the track rod protection bracket from under the rear of the front diff, fit a heavier track rod and mount an additional damper on the track rod. The other end of the damper is mounted on the rear of the diff (where the protection bracket was removed). Land Rover specialists such as MR Automotive in Brisbane will send you the required parts. You won't regret doing it!

on the top of your steering box is a 5/8 nut with a flat head screw in the center,,, loosen the nut and tighten the screw, if screw is too tight steering will be stiff dont forget to tighten the nut when done. also check tie rod ends, pitman arm and center link

if wheel is offline then the person who done the tracking is responsable and take the car back to them and get them to put it right .the correct way is to adjust each track rod end a little bit not all the adjustment on one track end ,which throws out the wheel alignment .this means that you lose steering lock on one side .THIS IS COWBOY BODGE JOB .If they cant or wont put it right then take it to someone who can and report them to the office of fair trading and make a legal claim for the job to be put right

Hi

Expect Kwik Fit have adjusted the tracking / wheel alignment at some time, and adjusted one track rod more than the other. ?

Count the threads showing ! ...I expect this will become apparent.

You need to have the tracking / alignment rechecked with track rods even lengths both sides.

Then if you road test and find the steering wheel out of alignment, remove steering wheel, and move round the correct position on the steering column splines.

Hope this is of help.

Good Luck !

John.

If someone has adjusted the adjustment at the top of the steering box too tight you will have that type of feel in the steering.

your tracking settings correct its zero eighth toe out the problem you have got is either they havn,t done the tracking correct by linning the front wheels with the back wheels or they have lined it up with your back wheels but the geometry on your back wheels is out so when the front is lined up with the back it automaticly knocks your front out of line it all depends on the tracking device they have used but a good mechanic would have noticed this and told you and wouldn,t have sent it out if the cars still pulling to one side did they check your cambers as these will cause the car to pull to one side as would set back onyour front wheels if its more 2.5cm how good is the bloke the did your tracking ? what you can do is the basics check your tyre presures then swop your front wheels over as sometimes if your tracking has been out it wears the tyres uneven then when tracking is put right it pulls to that side swapping the wheels cures this