I've just registered and would like to ask you all a question. I just bought a second hand Ford Focus 1.8 TDCi with 60k miles on it. It runs fine, but the throttle is exhibiting a strange behaviour. When cruising in 4th and 5th gear and applying little throttle, when I then need to get more power as in going up a hill or overtaking, as I press the pedal it will increase power for a bit until a point where it just cuts out completely. There is no visible smoke, and if I remove the foot of the pedal and press it again, it will be fine. I also notice it won't happen if I'm a bit more aggressive on the pedal. Does anyone has any idea what the problem might be? I bought the car together with a warranty from the dealer, but I would like to get some independent opinion before going there with the problem, just in case they try to dismiss it as normal.