Why would a 1990 Toyota Camry start but then lose power but restart after sitting a few minutes?

Sounds like a fuel problem to me ,if its not the electrical .This could be linked to a fuel fuse in fuse box or a filter problem ,or even perhaps a fuel pump. Start to check flow at engine , by disconnecting at fuel injection.then turn on key to start position.Put a hose on the line and make sure its going in a container,check flow and also pressure .If you got good flow and presure and it still does NT run go back to all electrical points .And also check for loose wires around the distributor.