Hi i have a c30 d5 2009 and i keep getting turbo loss and then other times it is in. I have cleaned the EGR out but still the same. I have also noticed that when the turbo is in when the accelerator is loosed off i get a hissing noise like a flutter is fitted. 1st and 2nd it pulls well but 3rd and 4th are very sluggish but 5 th is fine and 6th is sluggish can anyone HELP!
I have had info that the stepper motor needs changing. Anyone else came accross this?