2001 supercab F-150, 4.6; I seem to have no power to the fuel pump. No power at the inertia switch but I have a good fuse and power at the relay. Tried the relay out of the company truck (2003 F150) that runs fine but would not start mine. Any advise?

 

Have you checked voltage at the plug going into the fuel pump? Key on and off?

 

thanks for the reply. I checked power going into the inertia switch and only had 6 volts with it unpluged from the switch itself. figured it wouldnt pay to try further down the line but I will check just to be sure. This happened once before then just fired up again, no power at the inertia then all of a sudden it went to full voltage. Does the power go through the ignition switch also?