new customer fault occured we were nearest garage,engine will start and idle ok. but when accelerator depressed eng refuses to rev up.also display in instrument shows eng fault,stuggled to get into ecu had to use 1.4 16v option, many codes present as follows. 105 120 1121 1122 220 1221 1687 1682 most of these have some reference throttle pots and motorised throttle present or intermittent. not much experince on fiats but gut reaction is fault with APP SENSOR or main ECU which sits on top of engine or perhaps throttle body motor which looks similar to type fitted on some VW S.or perhaps some wiring breaking up. hope this rings some bells with somebody GEOFF TAYLOR.