Hi Guys.. I own a mark 3 ford fiesta 1.1ltr engine. I brought the car about a month ago, and ever since iv had a problem where by my car randomly stalls for no reason. I could be slowing down for a junction and the car will stall, even with the clutch dropped. Its like my revs just seem to die away. I hav noticed this when the car is standing that sometimes that revs just seem to die away and the car stalls. Also quite the opposide can happen by where the revs are very high with my foot being nowhere near the gas pedal. I think it could just be a build up of carbon in the engine, because maby the car was standing for a while before i brought it. What do you think??