i have a 56 reg 1.9cdti sri zafira and when i accellerate on a slip road to join a dualcarriage way its seems to lose the the turbo and the eml comes on it still drives as if its just a normal diesel .if i turn the engine off everything is back to normal have you any ideas what this can be cheers
not much of an answer, but more of an electrical problem than mechanical.probably a sensor fault.my advice is to get diagnostic equipment connected to your car.