Anyone got any idea before i take it to a garage tomorrow? I've got a 95(ish) Sharan that as of yesterday refused to idle both on start up and when driving. when i turn ignition on it trys to idle at about 6-700rpms and then dies if i don't give it a prod. and when i slow down, take foot off the gas it tries to die again.

dash is reading 'Service In02' apparently - does that mean something?

tia, anna