2004 Ford F-150 No power to fule pump

Tiny
IMASSARI
  • MEMBER
  • 2004 FORD F-150
Electrical problem
2004 Ford F150 V8 Four Wheel Drive Automatic

Hi, It seem I'm having no power to the fuel pump. Could you provide wiring diagrams or suggestion on what/how to check? I'm in Italy and it's kinda hard to get proper assistance, please help.
Thanks
Ivan
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Monday, March 2nd, 2009 AT 6:25 AM

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Tiny
JDL
  • EXPERT


http://www.2carpros.com/forum/automotive_pictures/170934_inertia_switch_1.jpg



Check the inertia switch first, it gets feed from the pump relay. Do you have good spark at the plugs?
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Monday, March 2nd, 2009 AT 9:25 AM
Tiny
IMASSARI
  • MEMBER
Yes, I've already checked that, and I have good sparks, it just don't get any gas.

Thanks for further support
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Monday, March 2nd, 2009 AT 9:35 AM
Tiny
JDL
  • EXPERT
With the engine cranking, do you have voltage at the inertia switch, both wires? If there is no voltage there, you need to check feed circuit to that switch.
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Monday, March 2nd, 2009 AT 10:24 AM
Tiny
IMASSARI
  • MEMBER
I'll check these wires, on which one (two?) Should I find +12Vcc?
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Monday, March 2nd, 2009 AT 11:03 AM
Tiny
JDL
  • EXPERT
Dark green wire with yellow stripe and orange wire with black stripe. If those have good voltage, next step is the fuel pump driver module, I don't have exact location, underneath rear of vehicle.

If there is no voltage on the wires mentioned, test at the fuel pump relay.
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Monday, March 2nd, 2009 AT 12:16 PM

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