Although the performance was restored with the "hard reboot" the car developed more issues with the auto gearbox. I eventually persuaded the owner to cut his losses.

The final fix is a 2002 Focus Automatic.

If anyone wants any spares from an old Frog eyed Scorpio, now is your chance.

Thanks Darren for your reply. Sorry if my response appeared a little ungrateful.

Cheers for now

Dave