Car stalls when hot main relay ?

Theres 2 of them Behind the glove box and to the right ..small bracket with the two of them together
1 ..ecu (turns on and off the ecu )
2..fuel pump (turns on and of pump)
...
If youre having stalling after driving for a while the pump or pump relay might be failing
..most likely the ecu is fine . But ud check the ecu relay anyway since its right there would hurt ..good luck hope this helps .