write were do i start i was driving the other day with the music on and when i went to put it into 5th nutting happend it was as if i missed a gear and the revs just shot up so i tried again and nutting happend so when i put it into gear and let the clutch out the speedo goes up as if ur driving but nutting is happning but ive taken the wheels of and on the drivers side shaft the cv boot on the cup has split open but i dont know if this has caused this if anyone has had this problem please could you help me the car is a clio sport 172 (2002) thanks thomas