I have a 91 honda accord lx, in the last three days i have had two occurrences while the car is on and driving where it completely dies and the engine lights come on. i wait roughly 30 minutes to an hour and the car starts back up again. ive taken it to my mechanic and described the problem, he believes it to be something with the fuel pump relay. is this accurate or could it possibly be the fuel pump itself, or am i missing anything? thank you.