My high mileage 95 GSR (236k) shut off twice on the freeway the other day after running for 1 hour. Everything seemed normal until after a long downhill without any throttle my car wasn't running. After pulling over it started again in about 15 minutes.

It happened again in about 1 hour-long downhill/no throttle and the car wasn't running anymore and after pulling over it started again in about 10 minutes or so. Just totally shut off-no sputtering or anything and when I went to start it cranked normally but nothing until eventually it started normally.

I replaced the fuel pump and relay recently, tank was 1/4 full, and it was hot out. I replaced the ign module and coil a few years ago. Coil on there is from AZ. Any ideas?