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Troubleshooting a fuel pump

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Old 01-12-2003, 01:38 PM
brokejoker brokejoker is offline
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Troubleshooting a fuel pump

It's a 91 f150 5.0 efi.

The fuel pump is working when bench tested, but won't work when connected at the tank.

If it won't work at the tank, is it a relay? What else could it be if it is not a relay? Where are the relays? I have a chilton's and it doesn't give the locations of the relays.

Thanks.
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Old 01-12-2003, 01:43 PM
dbrown13 dbrown13 is offline
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Troubleshooting a fuel pump

If you have dual tanks, I would be suspect of the tank selector switch, or the wiring to the pump.
Hope this helps,
Darrell

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Old 01-12-2003, 04:00 PM
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Troubleshooting a fuel pump

The fuel pump relay is the green one under the long, skinny black cover right behind the windshield washer fluid reservoir. The EEC relay is the brown one there. Either one could cause the problem you have. Also check the inertia switch which is located on the inside of the firewall behind the clutch pedal. It has a circuit breaker type push button switch on the top of it.
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Old 01-12-2003, 04:15 PM
gamehunter gamehunter is offline
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Troubleshooting a fuel pump

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