Question about 2002 Ford E350

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2004 ford E350 no power to fuel pump

There is no power to fuel pump checked inertia switch checked fuel pump relay all have power. can you please help

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  • Anonymous Mar 29, 2014

    no power to fuel pump inertia switch

  • Anonymous Apr 01, 2014

    No power to fuel pump

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  • Contributor
  • 11 Answers

Put a test light on the ground wire to a 12v power source and see if the pump is grounded properly

Posted on Sep 11, 2008

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2007 ford e350 van fuse for fuel pump location


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Where is a inertia switch on a 2004 Chevy caviler I was told its under the dash


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2004 ford explorer no power to fuel pump all fuses and relays good checked fuel shut off switch in kick panel not tripped


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Ford f250 power stroke diesel will not start. Where is the fuel relay located on a 2004


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Car will turn over but won't start. Through the


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.
--------
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.

Jul 17, 2011 | 1995 Ford Explorer

2 Answers

No fuel to the rail. New pump,filter,control module over radiator(2).checked inertia switch. if wire to inertia switch is same color code as wire leaving ECM then no power leaves ECM when switch is...


It helps if you tell what year,model, engine you are working on. Is power at the Inertia Switch? The power comes from the FUEL PUMP RELAY, the ECM only grounds the relay to turn it on. but not knowing what you are working on, thats all the info I have .

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Ford ranger 2004 there is no elect.going to pump. I changed the inertia switch --pump still not running.what should I do next ?


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

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2 Answers

1992 Ford E350 w/ 5.8 L cranks but no start,at 360K miles Any thoughts or any previous experiences with these old vehicles, I checked the fuel pump relay it works, and have spark but not sure where to look...


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

Feb 06, 2010 | 1992 Ford Econoline

2 Answers

New fuel pump and secondary fuel mod and still won't staart ( no fuel )


Not sure what secondary fuel mod you are posting about, can you explain what this is ?
Have you checked the fuel inertia switch in the passenger side kick panel ?
Is this a 2004 New Body style or 2004 Heritage / Lightning ?
If it is a New body style, have you checked / replaced the fuel pump driver module ? This is on the cross member by the spare tire, and some times they get corroded and crack.
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The fuel pump is powered from the Fuel pump relay ( non serviceable in the Cab fuse panel ) to the fuel inertia switch to the fuel pump driver module. The PCM is also connected to the fuel pump driver module
The fuel pump relay normally open contact is powered by Fuse #34 ( this fuse also feeds the PCM ). The fuel pump relay coil is powered by the PCM power relay.
If you are testing and the truck has not started, the PCM will shut off the Fuel pump after 5 seconds ( 8 ? ) of not having started. The only way to clear this is to have the truck start, or disconnect the battery.
Have you tested the fuel pressure on the fuel rail ?

Jan 11, 2010 | 2004 Ford F150

1 Answer

1997 Ford F150 Electric Fuel Pump will npt pump


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.

50b0c31.jpg

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

Jan 03, 2010 | 1997 Ford F150 Regular Cab

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