My 2002 golf tdi started sputtering around 2 years ago and continued off and on up till now where it is much worse and consistant. I used to switch the ignition off and on and that would cure it but now that doesn't work. I have taken the EGR valve of and given it a clean but the problem still persists. I read a thread from someone who was experiencing the same symptoms on their golf tdi and it was the VNT actuating arm that was sticking causing the problem. Anyone any advice out there on this prob?