Does anyone know if the power wire to the fuel pump is a a resistor wire reducing the volts to 10v? Someone bypassed the original and ran a direct to fusebox wire. It keeps coroding at the splice near the tank and failing. 95 F150 4x4 shorty

 

I can't say for sure but check here: www.fordfuelinjection.com

 

Should be full 12 volts. Someone probably bypassed it due to it not working, the inertia switch might be bad or tripped thats why the pump might not be getting power. Or bad pump relay. Do your gauges work?

 

The switch was kicked out. I checked it when I bought the truck, but someone a;ready "hacked" the wires. The gauges work fine. Do I have to rewire a relay into the power to the pump, or does that only shut down the pump when it reaches a set pressure? Thanks. This is a great little truck that I use for plowing, but I don't trust it on the road, since the pump failed on me a couple of times. It also is a brand new pump.

 

Unsure of the corrosion problem back near the pump. I find it kinda hard to believe a lower voltage would induce this. Perhaps try the heat shrink type of connector nezt time.

Another question asked was about the inertia switch turning off the pump when pressure is attained. No, the pump runs continuous, as long as the engine is running. Unless, of course you have an accident, it then trips out to prevent fuel leakage if a fuel line had been severed.

I would reactivate this important safety switch.

 

The question was about the relay, not the inertia switch. The pump is wired 12v direct to pump, no relay. Thanks for the responce