I have been living with this problem for some time now. Last year I had and still have a problem with my ECU not supplying the proper "switched ground" for my main relay to activate my fuel pump. I since ran the "switched ground" to ground and have been running the car like that. What would make the ECU not engage the switched ground? Could the ECU be bad? The car runs great, I just don't get it. Does anyone have schematics on the ECU that might help me? Thanks for any help!