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Posted on Feb 12, 2013
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2001 ford f-150 no power to fuel pump or safety shut off relays good

Took plug off of safety switch and tested plug no power fuses all good

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Anonymous

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  • Posted on Feb 14, 2013
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Ok this is what happened. I was driving to work and it just shut off. No spitting or sputtering. Changed the fuel pump and that wasn't the problem. Checked all fuses and relays...all good. We sprayed starting fluid in the intake and it will run. Tested fuel shut off switch and had no power from fuse box to the switch.

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  • Cars & Trucks Master 21,873 Answers
  • Posted on Feb 12, 2013
 Stephen
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You say the fuses and relays are good.
I'm showing three wires for the relay.
One lite blue and orange is battery voltage from the fuse.
The other lite blue and orange is ground from the computer. When the computer grounds the relay voltage should be sent to the inertia switch on the dark green yellow wire.
You should be able to jumper the power and dark green yellow to make the pump run.

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5 Related Answers

daveleeyates

  • 65 Answers
  • Posted on Mar 24, 2009

SOURCE: Ford Escort 1998 fuel pump not working.

good old ford lol, try looking at the crank sensor its located at the front of the engine tucked in right hand side of exhaust manifold and gearbox, two pin plug, i have also known these to have no end of faults with the fusebox.
easy to remove, and solder the connections inside they all suffer eventually, if your not to handy with cars i recommend taking to a auto electrician, easy if you know how. Good luck Davelee

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Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Apr 06, 2009

SOURCE: fuel pump problems 2003 s10 chev 4.3 v6

Your ECU is what acctivates your fuel pump realy. Put the key on the run possition and pull the ecu fuse for a few seconds and reinstall it ans it should accivate your realy for 5 seconds, Good luck.

ourhowse

Dar

  • 2007 Answers
  • Posted on May 20, 2009

SOURCE: I don't here the fuel pump ever kick on in my 1990 Ford F150, and I tested all of the fuses and they are good. I was thinking the relay for the fuel pump might be bad -- any suggestions?

It's under your hood, in one of those boxes, and should be marked. Your pump won't cut in if it's fried either. Check to see if there is power at the pump. Maybe you just have a loose wire. You can always hope!

Anonymous

  • 1861 Answers
  • Posted on Jul 17, 2009

SOURCE: I have a 99 tacoma with no power to fuel

Look to see if you have power at pin 1 of the circuit opening relay. The C.O. Relay is what powers the fuel pump. If you have power there (a blue wire), you have an open circuit between the relay and the pump.

Anonymous

  • 5 Answers
  • Posted on Oct 09, 2009

SOURCE: Intermittent fuel pump engagement when turning key - 2001 Taurus

try cleaning the connector that goes to the fuel pump, sometimes they corrode on inside. If that does not fix, test the wires feeding fuel pump with a multi meter until the condition shows itself again, if voltage drops to zero or very low then wiring problem, if voltage is unchanged with problem and fuel pump is not working and connectors are all clean, try replacement of fuel pump.

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I replaced the fuel pump on my 1998 ford f 150 and it is not getting any power to the fuel pump I checked the fuses but didnt see any blown fuses

Fuel pump relay , maybe . Inertia fuel shut off switch tripped .Does the vehicle have spark ? No signal from the Crankshaft position sensor ,the PCM - engine computer will not energize the fuel pump relay . Video's on youtube ,testing fuel pump electrical circuit from the relay base , where the relay plugs into .
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You have not mentioned whether you do a OBD fault code test on this, if not do that and post the results. Also jumper the fuel pump relay socket under the hood so it stays on all the time, you could have a defective starter switch, in this scenario the fuel pump is powered up as long as the engine is cranking, but as soon as the key is released to run position it shuts off.
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2001 ford Taurus won't start. Changed fuel pump and relay. Changed fuse. Still no power to safety switch in trunk

Good possibility. You could jumper the pump relay and see if you get power to the pump.
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My fuel pump quit working on my 2001 f150. the #10 fuse only has power to one side. how can I lose power to one side of the #10 fuse?

Each tank has it's own pump running on it's own power. If one goes bad it does not mean the other one will not work
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I have a 06 f150 5.4L the fuel sending unit went out so i had to change to pump and everything, the pickup ran fine before but wen i put the new pump in it will not work so i tried resetting the fuel pump...

Hello, There is a fuel pump Relay in the Powerbox under the hood. The system works this way. When you turn on the Ignition switch, it trips the Fuel pump Relay. The power is routed to the fuse from the Relay and then to the Inertia (safety) cutoff switch. Finally the power reaches the Fuel pump.

You need to test the fuse holder for power before it flows through the fuse. You should have the Ignition on, in order for the Fuel pump Relay to provide power to the fuse. Although the fuse may be good, it can not work without power.

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Ok on the 1999 carravan is there a fuel shut off safety switch "like a ford located in the trunk"

No, Chrysler does not use an inertia fuel shutoff switch like ford. There is nothing resettable or anything like that with the fuel system. You can disable it by pulling the ASD relay or fuel pump relay/fuse. If you have a problem, you can check your relays and swap them around to see if that solves your issue.

Hope this helps!
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1997 F-250 no power to the fuel pump. The fuel pump works. The safety shut off is down but no power in any of the 2 wires to it. changing the fuel pump relay has no improvemnt.

Check the fuse block. Use a test light and don't rely on just looking at fuses. But if the main ignition control unit went bad, it will also cut the power to the fuel pump relay. Autozone will check the main control unit.
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Ford fiesta,1996,petrol,fails to start.

either your fuel pump relay or the safety shut off switch
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