I have same problem & had new turbo fitted , as fault report showed but still npt working fully as turbo only goes into first mode ,,, ( not full power ) I am renewing the turbo servo motor but cant find its wherabouts yet ,, will let you know .
alan
February 2012
Might be a fault on engine management system car has gone to limp mode. Need to get the memory read for faults.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.