911 stranded, car has no spark

I had a coil do that to me last year, my son borrowed it and it would not restart, I drove and there to look at it and it fired right up, drove it home and parked it for 5 minutes and had my tools in hand, stepped in the truck and it did not start, looked at all my grounds on the ecu and everything checked out, I put a used coil on it and it has never gave me a problem. hope you figure this out soon.