my mate has got a 2008 A6 2.0TDi which has been running poorly for a few weeks. If he tried to drive steadily/normally it would judder & kangaroo mainly in 1st & 2nd but if he puts his foot down it runs better. The engine management light also came on. So i disconnected the maf & it ran perfect.
I did a diag check & 2 codes came up both relating to the maf. So today i've fitted a new Bosch maf then erased the error codes.
The problem is the car is still showing the same symptoms but there's no error codes & i've now disconnected the new maf & it's running fine with it disconnected!
anybody got any ideas?