Hi, I really need help with my BMW 3 series SE Automatic On an 2002 plate with 84000 miles Which has developed an unusual problem that even a BMW dealership is baffled by.
5 weeks ago I drove my car 1 mile down the road at about 30mph all lights on dash, car stopped and would not restart, No obvious problems engine not running lumpy, no loud bangs, no smoke ETC, RAC recovery towed to garage diagnostics read cam sensor unit, unit replaced, ran car for 4 days covering 350 miles no problems than drove car 1 mile down road and same again all lights on dash, engine stopped ( I was doing 40mph )engine would not restart, towed to garage but the car did restart when off loaded, diagnostics read DME Additive mixture adaptation, bank 2 control limit reached ( code 272D ) and bank 1 ( code 272C ) My mechanic called BMW as not sure of code and he was told never heard of it but we always change the oil separator and that should do it, oil separator changed car ran great for 3 days covered 250 miles and the same again engine cut out at 5 mph would not restart, towed to garage, but would restart after being off loaded, My mechanic takes car to BMW on tow truck to have BMW read diagnostics with there equipment but same codes as above come up but BMW mechanics have no idea they reckon it could be an air leak but good luck trying to find it and they are confused as the car is designed to over ride problems so that you can get the car to safety, not just stop dead as this is dangers the diagnostic equipment has not pin pointed a fault and they said that they could try this and that and the bill could run into thousands and still not cure the problem. Any advice (apart from by a new car) .
5 weeks ago I drove my car 1 mile down the road at about 30mph all lights on dash, car stopped and would not restart, No obvious problems engine not running lumpy, no loud bangs, no smoke ETC, RAC recovery towed to garage diagnostics read cam sensor unit, unit replaced, ran car for 4 days covering 350 miles no problems than drove car 1 mile down road and same again all lights on dash, engine stopped ( I was doing 40mph )engine would not restart, towed to garage but the car did restart when off loaded, diagnostics read DME Additive mixture adaptation, bank 2 control limit reached ( code 272D ) and bank 1 ( code 272C ) My mechanic called BMW as not sure of code and he was told never heard of it but we always change the oil separator and that should do it, oil separator changed car ran great for 3 days covered 250 miles and the same again engine cut out at 5 mph would not restart, towed to garage, but would restart after being off loaded, My mechanic takes car to BMW on tow truck to have BMW read diagnostics with there equipment but same codes as above come up but BMW mechanics have no idea they reckon it could be an air leak but good luck trying to find it and they are confused as the car is designed to over ride problems so that you can get the car to safety, not just stop dead as this is dangers the diagnostic equipment has not pin pointed a fault and they said that they could try this and that and the bill could run into thousands and still not cure the problem. Any advice (apart from by a new car) .