Sounds like the computer control of the relay is defective-when you jump start the relay -you prime the system for 2secs when it fires up-what powers it after the 2secs is the fuel pump/oil pressure sending unit.
![https://www.2carpros.com/forum/automotive_pictures/12900_oil_sending_unit_and_fuel_pump_circuit_100.gif](https://www.2carpros.com/forum/automotive_pictures/12900_oil_sending_unit_and_fuel_pump_circuit_100.gif)
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Saturday, January 23rd, 2010 AT 4:14 PM