shaun...I have exactley the same problem!on the same car...could be the Turbo overboost...or the MAF which is common on these,is it the PD VW engine//but mine seems to be fuel related I hope..Iam going to change fuel filter 2morrow and have put a redex cleaner through it,i will give it ago and see,before si spend too much on it???...does pay to get a VW or diagnostic test done on it first
steve c, December 2008