have just taken my 1.6 147 for a diagnostic because sometimes when i park up and return to the car it wont start straight away. thought it might be an immobaliser prob but the only thing showing is a lambda sensor fault its not even showing the airbag warning light. the cam variator req doing quite badly so i have booked it in to have this replaced. would the vibrations of the engine cause the crank sensor to trip the engine? has anyone had this same problem and got it sorted?