Going to work on Thursday last week the car started driving "oddly", changing gears really eagerly, the throttle pedal went "soft" and the glow plug light started flashing. No other warnings. I pulled over, restarted and all was fine. During the day it did it 3 other times.
I took it to a mate who ran a diagnostic on the car and there were 3 underboost faults. I noticed that the "lid" for the airbox was off. Fixed that.
As the car has 58k (FSH, oil change very 9k) I thought it may benefit from a Terraclean so took it to a friends garage. The car behaved on the way down.
Whilst under the bonnet he noticed a load of soot next to the turbo on the suspension mount and the turbo casing itself.
There was 1% soot loading. It's going back in on Thursday to investigate the soot but as yet has not thrown a light.
Could the airbox lid have caused it to throw a light?
I read the thread with the other FL 2.0Tdi that had the soot in the engine bay but he rejected the car so there was no further work carried out.
Anyone else had this?