Question about 2004 Ford F150

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No start,no fuel

Has new factory fuel pump and power at two of the wires feeding the pump pump still will not run

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  • ntruji11 May 11, 2010

    did you disconnetc the negative battery cable at all?



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Check the fuel pump relay, sometimes you can switch the relay for the a/c compressor with the fuel pump relay (usually they are the same type relay) and see if the fuel pump turns on, ifthis still does't work, then i would suggest trying another fuel pump (thisone may be defective, it happens). Hope this helps.

Posted on Mar 10, 2009


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I have a 03 Hyundai accent I just replaced the fuel pump I have no power to the fuel pump I've checked the fuses and the fuel pump relay it won't start I'm not sure what to do next

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Pull the fuel pump relay out of the terminals it is plugged into-you need to check if the power feed for the pump is still available at the relay. Clip the test light lead to a ground and touch the test probe to the positive battery post-to check that your ground is good- tester should light up. Now touch the probe to all of the terminals that the relay plugs into. One terminal should have power with key off. If no terminals have power, you have lost the power feed for the pump. Double check all your maxi fuses in the power distribution box. Either a maxi fuse or a fusible link will be the power feed for the fuel pump relay.
If the power feed is there at the relay, try a new relay. If still no pump, a shop will probably have to check your fuel pump circuit.
Did you check for power at the fuel tank while the key was held in crank? When the engine is cranking, the fuel pump wire should have power. When the key is turned to on, the fuel pump should have power for about 2 seconds, to pressurize the fuel system. Then when key is turned to crank or start, the fuel pump should stay on.

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I got a 88 gmc jimmy 2.8L just replaced the starter and now it wont start. bthe fuel pump wont turn on and the ecmb fuse is still good. where else should i check for a problem before replacing the fuel...

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sounds to me like your fuel pump relay is still bad happens all the time with even the newest of parts and/ or you might want to take the wires off of the pump and clean them really good road grime seems to find its way into even the tightest places especially if you replaced it once you broke the factory seal....

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