gsxr:

Call a local diesel injection/turbocharger service and ask for advise.

I suspect the wastegate servo has to be calibrated, and it is unlikely you will get it right very quickly (I could be wrong!). I don't do turbochargers -- I will tackle anything mechanical I have tools for, but turbochargers and injection pumps need tools I niether have nor can afford.

Shouldn't be too expensive to have the wastegate servo replaced and calibrated it you take the turbo off and deliver/pick up.

Check the pressure hose on the servo, too -- they can fail, and cause trouble. That is, if it isn't internal -- I haven't looked at mine that closely!

Peter

__________________
1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!