601cg

Hello I have a intermittent problem with my 2001 f 150. It will not always start. Every once in a while the fuel pump will not prime ( or at least i cant hear it activate) I let it set or try clicking the key back and forth and it will eventually prime and crank. Should I replace the pump or maybe the relay??? Any help would be appreciated.

Bell Blue Raider

Try swapping it with good relay and if that doesn't help then you can blame the pump

Tackle

I would do some more diagnostics before you dump the money into a fuel pump. Get a gauge to test fuel pressure.