Hi guys,
I am conscious I havent updated on my issues for a while. As can be seen form my post way back at the start of this thread my car is under warranty and was experiencing a lot of the issues attributed to idle problems etc. To date I have had replaced under warranty: injectors, harness, dpf sensor, egr valve, tandem pump yet the rough idle still persisted. Over the last couple of weeks I have been aware that the car feels sluggish at motorway speeds where it should be in its power range, I asked Audi to look at this for me, which they did, but as there was no Engine Management Light it appeared that all parameters were within spec.
This weekend after a long journey down to England the Glow plug light started flashing and the car lost any power, almost like driving an old non-turbo diesel. SMooth revving but very slow revving. Switched engine off, back on again light out and running fine.
Booked my car into Audi today as they now have a fault code to look at and it appears that the inlet manifold has a crack in it. When I get the car back tomorrow I will let everyone know if the lumpy idle has been resolved with this being changed.
Dougie