When my vehicle is first started (cold engine) it operates normally, including ability to wind the RPMs past 3000 (in sport mode) and the car is quite peppy.
Within 10 minutes or so, RPMs will not wind past about 3000 RPMs and it just dogs it at that point. Same is true in comfort mode.
Mechanic has checked it and initially found a loose air line and a code indicating the loose air line. Loose line was fixed but did not solve the problem. New code he says, is pointing him to believe the turbo charger is shot. However, he is waiting for more experienced tech to return from vacation (next week). In the meantime I am driving it and living without the pep.
Can anyone provide insight or advice? I could really use it. I had a similar problem with my 98 E300, but that turned out to be nothing more than carbon buildup in exhaust system, which was an easy fix. Thanks.