Driving down the highway at about 50mph the car suddenly and quietly lost power the motor stopped no noises or warning, we thought at first the fuel pump but after checking it decided it was fine gas all the way to the injectors with plenty of pressure, so then checked the plus and all are firing, then we tried startin fluid directly into the throttle body wit no result, the car sounds like it wants to start, the timing belt was replaced about 15,000 miles ago and seems tight, could it be some sort of sensor not alowing the car to start or does it sound more like the timing has jumped? help im running outta ideas! checked the fuses/ relays all seem fine