Can any one help me my girlfriends car is playing up it keeps stalling it drives ok but ass soon as u stop it goes to stall and then it don't but if u rev it the revs go up and tje as soon as u take your foot off the pedal the rev drop right down and then at stalls and is a rite arse to start again and the other thing is she's use load more petrol than she normally does since it started doing this. The car is a mk4 golf 16se w redge