1986 Pontiac Fiero Fuel pump not shutting off

1986 PONTIAC FIERO
110,000 MILES • 6 CYL • 2WD • AUTOMATIC
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CHARLEYPRINCE
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The fuel pump in my V6 Fiero won't shut off with the key turned off. I have to take the fuse out every time or the pump will run the battery down. I noticed you told someone to replace the relay switches, which i have already tried and it still won't shut off. Could it be the fuel pressure gauge, or the fuel pump itself?
Aug 16, 2008 at 1:53 PM
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RASMATAZ
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Lets try this disconnect the oil pressure sending unit and see what happens-if the OPSU is shorting out internally it will cause the fuel pump to run constantly


https://www.2carpros.com/forum/automotive_pictures/12900_oil_sending_unit_and_fuel_pump_circuit_69.gif

Aug 16, 2008 at 3:39 PM