Fuel pump relay location?

Tiny
AMBROSE2252
  • MEMBER
  • 2004 FORD F-150
Where is the fuel pump relay located and the fuses?
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Sunday, March 22nd, 2009 AT 9:27 PM

13 Replies

Tiny
KEN
  • ADMIN
Hello,

The fuel pump relay is Number 303 in the main PCD under the hood. Here is a guide and some fuse box diagrams (below) to help you get the problem fixed.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Please let us know what happens so it will help others.

Cheers, Ken
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Thursday, August 17th, 2017 AT 8:53 PM
Tiny
HOOTGIBSON
  • MEMBER
  • 2004 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 67,000 MILES
I had about 1/4 tank of gas driving I had no problems before and it just died, it would then start get up to 1K rpm and die. Changed fuel filter along the road, I got dirty gas out of the tank side, it will start but only run a little longer than before. I tried to remove the filter and pump gas into a gas can but can not get any fuel to pump out. Is there another filter in or on the tank that could be plugged. I had bought gas at a major truck stop on I-70 outside of Kansas City, Mo, so there should not have ben a old gas problem
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Tuesday, September 8th, 2020 AT 12:30 PM (Merged)
Tiny
2CEXPT
  • MEMBER
No fuel being delivered to fuel rail sounds like the fuel pump is gone.
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Tuesday, September 8th, 2020 AT 12:30 PM (Merged)
Tiny
OBXAUTOMEDIC
  • EXPERT
I would find the Fuel Pump Relay and jump it to activate the pump. If the fuel pump works doing this. Take a look at the other Relays around and see if any have the same numbers. If one does try swapping the two out. Remember what the one your swapping is for and check to see if what it runs works or not.
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Tuesday, September 8th, 2020 AT 12:30 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Try this find the inertia fuel cutoff switch behind the right kick panel try resetting it and turn key on do you hear the fuel pump If not remove switch and jumper the electrical connector, try key again Le tme know-


https://www.2carpros.com/forum/automotive_pictures/12900_inertia_switch_2.jpg

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Tuesday, September 8th, 2020 AT 12:30 PM (Merged)
Tiny
AMBROSE2252
  • MEMBER
  • 2004 FORD F-150
  • V8
  • 4WD
  • AUTOMATIC
  • 80,000 MILES
WHERE IS IT
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Tuesday, September 8th, 2020 AT 12:30 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Your vehicle's fuel pump relay is located in the central junction box (relay 303 ) pictured below.


https://www.2carpros.com/forum/automotive_pictures/261618_Noname_348.jpg



The central junction box is located behind the right side kick panel.

Thanks for using 2CarPros.com!
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Tuesday, September 8th, 2020 AT 12:30 PM (Merged)
Tiny
BLUEMAN1
  • MEMBER
  • 2004 FORD F-150
  • 5.4L
  • V8
  • AUTOMATIC
  • 150,000 MILES
Can a fuel pump relay sensor cause a car not start?
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Tuesday, September 8th, 2020 AT 12:31 PM (Merged)
Tiny
JDL
  • EXPERT
Is your fuel pressure correct? The fuel pump prime doesn't need an rpm signal, but, after a few seconds if no rpm signal, no fuel pump operation.

Engine cranking, do you have spark at the spark plugs? Do you have an injector pulse?

Check for applicable trouble codes. To check codes, yourself, at the least, you need an obd2 code reader.
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Tuesday, September 8th, 2020 AT 12:31 PM (Merged)
Tiny
KRANMARHKB5DN
  • MEMBER
  • 2002 FORD F-150
Engine Performance problem
2002 Ford F150 V8 Two Wheel Drive Automatic 110k miles

Intermittant starting problem. Runs fine for two or three weeks, then I shut it off for a short period, like gas stop, or grocery stop. No start. Engine spins over but will not fire. Sometimes it almost starts as if getting a slight amount of fuel. Let it set overnight, and it starts right up the next day. Can a fuel pump do this, or a filter, a relay?
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Tuesday, September 8th, 2020 AT 12:33 PM (Merged)
Tiny
BLUELIGHTNIN6
  • EXPERT
Unfortunately an intermittent problem is really not serviceable until it becomes more steady. A relay would normally not cause an intermitent. It will either fail or not. Same with filter it is either restricting fuel supply or not. And a dirty filter will only cause poor fuel mileage and maybe poor idling, it rarely prevents engine from starting. In any case you will just have to keep an eye on it and if the problem gets more and more common then it will become easier to diagnose.

Thanks for using 2CarPros. Com!
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Tuesday, September 8th, 2020 AT 12:33 PM (Merged)
Tiny
BIKERMAN2000
  • MEMBER
  • 2001 FORD F-150
  • V12
  • 4WD
  • AUTOMATIC
  • 118,000 MILES
Where is the fuel pump relay at, and how is it replaced
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Tuesday, September 8th, 2020 AT 12:33 PM (Merged)
Tiny
2CEXPT
  • MEMBER
Fuel Pump Relay In battery junction box.

Unplug it that's all and stick the new one on.
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Tuesday, September 8th, 2020 AT 12:34 PM (Merged)

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