FUEL PUMP ISNT GETTING ANY POWER

1994 Oldsmobile Cutlass

Tiny

caitlin123

March, 17, 2008 AT 11:04 PM

Electrical problem
1994 Oldsmobile Cutlass Engine Size unknown Wheel Drive Type unknown Automatic 74000 miles

I already replaced the fuel pump, and the relay. There is power to the relay, but no power from the relay to the pump. Cannot find a fuse, or impact safety switch anywhere. Don't know source of the higher amp voltage that comes out of the relay and to the pump.

thanks
caitlin

FOUND 10186 RELATED QUESTIONS

1 Answer

Tiny

rasmataz

March, 18, 2008 AT 2:16 AM

There's 17 fuses in your vehicle and there's no fuel pump fuse listed-Dunno if the ECM B fuse is being used-

The PCM energizes the F/P relay till it de-energized within 2 secs-when the engine is being crank and oil pressure is built up this is where the OPSU powers the pump.

The fuel pump relay is nothing but a primer in that 2 secs-also see below. You're probably wondering about the fuse below-


http://www.2carpros.com/forum/automotive_pictures/12900_oil_sending_unit_and_fuel_pump_circuit_35.gif



Check for power at pin 85 coming from the computer


http://www.2carpros.com/forum/automotive_pictures/12900_fuel_pump_relay_7.jpg

Please login or register to post a reply.

Fuel Pump Replacement Ford Mustang
Fuel Pump Replacement Done Right
Fuel Pump Replacement
Fuel Pump Test Chevy Tahoe