the engine keeps cutting out when stopping or slowing down sometimes i can keep it going but put i can put my foot nearly to the floor and the rev counter will be lucky to get to 1,000 rpm, it is also jerking along at times. then the epc light stated coming on. i restarted the engine and all was ok for few mins, i did this many more times on the 200 mile journey home. we have had it serviced, breathers have been checked and the air flow meter has been checked, any ideas?