I have had Bibi back for a couple of days and ever since the Air con seems to be playing up. They checked it while she was in and said it was a bit low, so topped it up. Well since then the car just seems different, theres a real noise coming form the bonnet like one of those ventilaters on casualty and the engine power seems to dip quite alot when the air con comes on and does this sort of jerky type thing, dont really know how to explain it properly. Is this normal and could it just be I never noticed it before or could there be a problem? I'm sure the dealers will think I'm neurotic if I go back