Hi, I've got an 850 wagon with about 300,000 k's on that has a weird problem. Sometimes, usually when the engine is already warm after driving for about 5 mins the engine will just stop. If i try to start it again straight away it'll fire a little then stall. After waiting about a minute though and starting again it'll start fine and is fine to go. Is this a problem that anyone has heard of before? Thanks, Chris