Mechanics

F150 NO POWER TO FULE PUMP

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
Avatar
Imassari
March 2, 2009.





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?

JDL
Mar 2, 2009.
Yes, I've already checked that, and I have good sparks, it just don't get any gas.

Thanks for further support
AD

Tiny
Imassari
Mar 2, 2009.
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.

JDL
Mar 2, 2009.
I'll check these wires, on which one (two?) Should I find +12Vcc?

Tiny
Imassari
Mar 2, 2009.
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.

JDL
Mar 2, 2009.

AD