So my father in law has a 1999 Supra that will run awesome for a couple hours and out of the blue it will just die. Over the past two summers the family will take the Supra out and cruise around ski go to the sand bar till she decides to shut off. Father in law and I took it out this weekend drove around for 30 minutes ranging from idle to 30mph and never had the first problem. We brought it back put it on the lift went in and packed cooler for day on the lake. Came back a couple hours later fired the boat up idled for about 300 yards and the Supra started to sputter and just died. This has happened several time the last two summers. When the engine dies it will not start for an hour or so. We can literally tow it home put it on the lift for an hour come out and it will fire up and sound just fine. When the engine dies the radio and dashboard lights CD player etc will stay on. We do not think itÂ’s an electrical issue but we are not sure. Any help would be greatly appreciated.