2004 ford E350 no power to fuel pump

Subaru vehicles do not have inertia switches. That is a Ford item. Your fuel pressure tested good then? Those have main relays up under the dash on the far left of the drivers side, sometimes those do go bad. Your 2004 should have a fuel filter on the left strut tower, if it's never been changed that could be the problem too. I have seen fuel pumps work but the level sender go bad and say there is fuel in the tank when it's actually empty.

Fuel pump relay or a FPDM - fuel pump driver module , or the inertia fuel cut off switch was tripped . F150 Expedition No Start P1233 Fuel Pump Driver Module How to test an electric fuel pump no fuel psi testing Ford

Battery junction box , under hood ! Fuse # F13 20amp. The fuel pump relay is in same box . Do you know what a relay is ?

Ford uses inertia fuel cut off switch not Chevy or any other GM products . If you have no fuel pressure check the fuel pump relay an check out this video on trouble shooting GM fuel pump circuit .
GM Fuel Pump Relay Testing

there is a recall for the inertia switch, may not be tripped but its not letting voltage thru.other than actually checking for power at the fuel pump.top of the fuel tank.

Fuel pump relay is behind the radio to the left. This is inside the dash board towards the drivers side. The fuel pump inertia shut off switch is in the passenger side front kick panel. Check for power at both sources before checking at the pump itself. It might save having to drop the tank.

No noise from fuel pump when you turn over the car .First thing get voltage at fuel pump relay checked, is there 12 volt to the relay.If no, then problem is again the relay.--------- To reconfirm the problem, try other test, that is remove the relay and by pass the relay terminals with a jumper wire .Then with 12 volt external battery give power to fuel pump connector and see, if the fuel pump starts, then its clear that fuel pump relay is faulty.----------- Also other problem can be fuel pump inertia switch.If the inertia switch is faulty then also fuel pump will not start.-------- The fuel pump relay on a 1995 Ford Explorer is in the power distribution
box, in the engine compartment, driver's side near the firewall.----------
The fuel pump inertia switch is in the right front passenger area
it is below the dash but above the carpet in the right hand corner.--------
Its a push button type inertia switch.
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Fuel Pump Activation
When ignition switch is turned to START position, PCM operates fuel pump relay to provide fuel for starting engine. PCM senses engine speed and shuts off fuel pump by opening ground circuit to fuel pump relay when engine stops or engine speed drops to less than 120 RPM. When ignition switch is in ON position, EEC power relay is energized (contacts closed). Power is provided to fuel pump relay and timer in PCM. Fuel pump receives power through fuel pump relay contacts.
Inertia Fuel Shutoff (IFS) Switch
All models use an electrical interrupt switch in fuel system. During a collision or vehicle rollover, electrical contacts within inertia switch open, shutting off fuel supply to electric fuel pump. Fuel supply is interrupted even when engine is running.
A reset button is located on switch assembly. If electrical circuit trips, vehicle will not restart until switch is reset. Fuel system should be inspected before resetting switch.
IFS switch is located under instrument panel, near right side of transmission hump. ----------- If the fuel pump relay, the inertia switch and fuel pump all checked ok, and fuel pump is working with direct 12 volt source to fuel pump.Then problem relates to computer.The computer (power control module, PCM) is faulty and has to be replaced.--------- This will help.Thanks.Helpmech.

Hello, If you have not checked your Inertia switch it shuts off the fuelpump and may need to be Reset. It should be in the RH side of the jack compartment. You just push and hold a button on the switch and then the fuelpump should work.

The Inertia switch is a safety device and can trigger when a door or hatch is closed hard enough to simulate a crash. You also can have a Relay in the Powerbox which may be labeled. Try the Inertia switch first and if it does not help, then change the Fuelpump Relay.

Are you getting power to the inertia switch? I would check the fuse and relay for the fuel pump.

Inertia switch is located Under right side of dash, on heater plenum. Do you hear the fuel pump turn on when turning ignition on? you can hear pump by opening fuel door and put ear against while having someone turn ignition on, another test would be to install a fuel pressure gauge on scradder valve and reading fuel pressure - recommended

Did you check the fuel inertia switch in the passenger side kick panel ?

The fuel pump is powered :
the fuse to the fuel pump relay.
The fuel pump relay to the fuel inertia switch
The fuel inertia switch to the fuel pump itself.

At the fuel inertia switch in the kick panel, power from the relay is the Dark Green w/ Yellow stripe wire and the pink w/ black stripe wire is the power. from the fuel inertia switch to the fuel pump.

If you jumper the fuel pump relay, you should hear it run. If not pull the fuel pump relay, and check the pins in the relay socket, pin 30 should be the power from the fuse.



If you have power at pin #30, jumper the relay socket as shown with the red line above, and check the dark green w/ yellow stripe wire at the fuel inertia switch for power.
Press the button on the top of the fuel inertia switch, and check for power leaving the fuel inertia switch on the pink w/ black stripe wire.

This is tests good, check for power at the fuel pump, same pink w/ black stripe wire.
Fuel inertia switch info is in the owners manual, If you did not get an owners manual with your truck ( purchased used ), you can download one from Ford :
https://www.fleet.ford.com/maintenance/owners_manuals/default.asp