Fuel pump relay 2004 EX?
Thread Starter
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Senior User
Joined: Feb 2011
Posts: 144
Likes: 0
From: Denver, Colorado
Fuel pump relay 2004 EX?
It seems that my fuel pump is out. I went to start my EX and when i did it would not stay running but would idle rough then die. Started it again and it did the same thing and the fourth time it would turn over but not fire. So I decided it must fuel related.
I changed the fuel filter thinking maybe it was clogged and it is the cheapest fix for a possible fuel problem. Well after that the truck would turn over but not start. So I jumped in the forum to see if anything else might cause this problem. I read about the fuel pump relay, cam positioning sensor and of course the fuel pump.
Does anyone know where the fuel pump relay is on a 2004 Excursion 6.8l? Is there anything else i have not thought of relating to the fuel problem?
I have not checked pressure at the fuel rail and I could not hear the fuel pump run when the key was turned on, but i never heard it before.
If it is the fuel pump, can i just replace the actual pump or do i have to change the entire module?
Thanks for any help
I changed the fuel filter thinking maybe it was clogged and it is the cheapest fix for a possible fuel problem. Well after that the truck would turn over but not start. So I jumped in the forum to see if anything else might cause this problem. I read about the fuel pump relay, cam positioning sensor and of course the fuel pump.
Does anyone know where the fuel pump relay is on a 2004 Excursion 6.8l? Is there anything else i have not thought of relating to the fuel problem?
I have not checked pressure at the fuel rail and I could not hear the fuel pump run when the key was turned on, but i never heard it before.
If it is the fuel pump, can i just replace the actual pump or do i have to change the entire module?
Thanks for any help
Cargo Master
Joined: Feb 2011
Posts: 3,450
Likes: 13
From: Forest lake minnesota
It seems that my fuel pump is out. I went to start my EX and when i did it would not stay running but would idle rough then die. Started it again and it did the same thing and the fourth time it would turn over but not fire. So I decided it must fuel related.
I changed the fuel filter thinking maybe it was clogged and it is the cheapest fix for a possible fuel problem. Well after that the truck would turn over but not start. So I jumped in the forum to see if anything else might cause this problem. I read about the fuel pump relay, cam positioning sensor and of course the fuel pump.
Does anyone know where the fuel pump relay is on a 2004 Excursion 6.8l? Is there anything else i have not thought of relating to the fuel problem?
I have not checked pressure at the fuel rail and I could not hear the fuel pump run when the key was turned on, but i never heard it before.
If it is the fuel pump, can i just replace the actual pump or do i have to change the entire module?
Thanks for any help
I changed the fuel filter thinking maybe it was clogged and it is the cheapest fix for a possible fuel problem. Well after that the truck would turn over but not start. So I jumped in the forum to see if anything else might cause this problem. I read about the fuel pump relay, cam positioning sensor and of course the fuel pump.
Does anyone know where the fuel pump relay is on a 2004 Excursion 6.8l? Is there anything else i have not thought of relating to the fuel problem?
I have not checked pressure at the fuel rail and I could not hear the fuel pump run when the key was turned on, but i never heard it before.
If it is the fuel pump, can i just replace the actual pump or do i have to change the entire module?
Thanks for any help
Thread Starter
|
Senior User
Joined: Feb 2011
Posts: 144
Likes: 0
From: Denver, Colorado
I have read the pump replacement thread and am subscribed to it. Is it best to go with an OEM pump, Bosch, Airtex or Spectra? Anyone have an opinion or tried one of the off brands? Thanks
Moderator
Joined: Jul 2010
Posts: 12,052
Likes: 1,550
From: Media PA
My pump failure played out exactly as you described yours. I went with a Motorcraft replacement unit, once I got the correct one, my EX is a Cali spec rig without any under hood stickers indicating that. 
You can just get the actual pump part of the unit for less money, I have no idea about other brand's reliability. Pretty simple job really once you empty the tank out.
You can just get the actual pump part of the unit for less money, I have no idea about other brand's reliability. Pretty simple job really once you empty the tank out.
Cargo Master
Joined: Jul 2009
Posts: 2,885
Likes: 26
From: Chino, California
I saw a YouTube video showing how to install a bypass relay so you can replace with a 30A universal relay if it fails again. I am planning on doing this after I put in a new fuel pump.
Fleet Mechanic
Joined: Jun 2006
Posts: 1,589
Likes: 20
I’m a 6.0 guy so I’m shooting in the dark here. Isn’t there an emergency gas shut off switch in the rear of your X? If so, you might want to check that for proper operation before you attempt a fuel pump replacement.
Ed
Ed
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Cargo Master
Joined: Jul 2009
Posts: 2,885
Likes: 26
From: Chino, California
Thanks. I did check the inertia switch. Even jumped the pink wire with 12V+ to bypass the relay and still no fuel pressure.
Changed it today and it fired right up.
Changed it today and it fired right up.
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