Having major problems with a 03 citroen C8 sx auto petrol. Been quoted £200 for a new throttle body as the car looses revs and will only drive in limp mode. Despite trying to add WD40 to the throttle body it intermitantly works. If i go ahead with the new throttle body i am wondering whether this will fix the antipolution fault im getting on the lcd. Before the vehicle become unable to drive we also had a gear management fault any ideas what this problem is? Any advice appreciated.