Hi , been the owner of a 220d for a couple of months now first problem this weekend after it being snowed in for a week, started ok but then lost revs and stalled started ok but had to keep revs up, ok when warmed up, next two days stalled 5 minutes after start up restarts ok drives lovely gave it a couple of miles run but stalled again when I got home and let it idle a while, could the week covered in snow and ice be the cause of the problem.