Hi - I,m not new to the site, probably 8months or so, but it's my first post ever- so i hope that i am doing this right. I have enjoyed the site, but still can not find the solution to my problem. i have a 2002 Galaxy tdi (115) zetec- when i drive the car under load ( i.e hard accelerating up a hill, reaching 3,500 rpm or overtaking on a motor way) the car looses what i feel is the turbo and what i am told goes into limp mode. If i stop the car, turn the ignition off and then back on again the car is back to normal. i took the car to several "diagnostic" garages and the fault code that they give me is " turbo over boosting" but can not tell me anymore!! I have changed the maef sensor and that has inproved the cars proformance, but nothing else. Recently i have heard a tinney noise from the engine - generaly when the engine is cold, and from the right hand side as i sit in the drivers seat. The noise seems to happen when am changing gear (2nd to 3rd ) or about 1800 rpm with a sort of juddering effect ( wonts to go but cant ), but above that rev range and it's fine. i have explained this to so many people, mechanics, technicians and looked extensively on the site and still no futher foward - please someone come to my aid, i cant be the only person with this fault.