I'd be checking the boost hoses before going down the turbo route. The turbos on these engines are generally good for at least 150k miles, and often good for the life of the engine.
Boost hoses on the other hand fail quickly, especially the...
Hi, I think the turbo has gone, There was a bit of a bang and then the engine wouldn't run properly. The EGR was opening at idle and the engine 'hunting'.
As a temporary measure the connection to the inlet manifold from the EGR was blanked off...