My car runs fine when there is more then a half a tank of fuel in it, but as soon as the needle hits halfway, the engine dies under revs and returns to idle, If you leave the acc pedal down, the car will have burst of accleration, and then cut out again then another burst. This problem always occurs within metres of starting to drive, The car almost always idles fine and will usually rev fine if not in gear, Sometimes when the motor cuts out it will chugg alittle in idle and when reving