Question about Ford E-150

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When I connect the battery, the fuel pump runs and will not shut off. Where is the fuel relay located? What can you advise?

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If it's early,the relay is under the dash (green with black top) on the drivers side.If it's late, in the engine compartment on the drivers side near the radiator,and they all look alike. When you hear it the fuel pump running with the key off, tap on the
relay(s). If the pump stops,replace the pump relay and the EEC power relay.

Posted on Oct 07, 2009

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LOOK UNDER THE HOOD.THE POWER DISTRIBUTION BOX WILL BE ON THE INNER FENDER WELL.IT HAS FUSES AND RELAYS.BY THE RELAY CIRCUIT ALWAYS HOT.ITS REMAINING CLOSE TO KEEP FUEL PUMP RUNNING.REPLACE IT.BUT YOU NEED YOUR GLOVE COMPARTMENT MANUAL TO LOCATE IT YOU HAVE SEVERAL RELAYS.

Posted on Sep 27, 2009

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No Power to Fuel pump


I would check the ground for the fuel pump relay that operates the switch side of the relay.
You should have 2 12v inputs to the relay. When the relay gets 12v input, it closes the relay switch on the heavy current side that sends 12v to the fuel pump.

A relay is needed because you don't want heavy current going through the switch.

Also, most cars only run the fuel pump for 2 seconds when the key is turned on because you don't want the fuel pump running without the car running. If you listen closely at the fuel tank, you should hear the pump run for 2 seconds when you turn the key to "ON"
When the key is turned to "START", the fuel pump should run continuously.
The engine computer tells the fuel pump to shut off if the engine rpms are zero.
So, I would check the switch side of the relay. Power amd ground.

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Personally I wouldnt bother tracing the wire as it is probably not worth your time, and just run a constant 12v from the battery to the relay on like 10ga wire. There is probably a short somewhere in the system which can be a real headache to find.

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