I would try a new fuel and air filter, and if its got one .. the lamnda sensor
David
January 2008
if its not"drive by wire" ( not familiar with vw ) check it is getting full throttle,with engine off get someone to fully depress acc pedal and check linkage is reaching its stop .
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vans.