Hello, I have a 94 ES300 with 212K mi, the engine cuts out while driving usually 10 min. It will not restart it acts like running out of gas. Then after let it sit for 10 min it will start and ran fine. CEL did not come on. Last week, I replaced the fuel pump, EFI relay, fuel filter and the problem still exist, how can I tell if the fuel pressure regulator is bad. Any suggetions?