Im having problems with my 2.0 Ref Sport, the emissions light is on and there was a strange noise coming from the engine when i turned it off, the engine is also juddering to a stop when i turn off the ignition, i have read some old threads and now believe that air intake motor is faulty, if i'm right i need a new throttle body assembly fitted, i was looking to know know your views on this and how much would it cost etc. as my warranty expired ten days ago 
