Hi its been a long time since i been here any way. for the last coupleweeks I been having some problems with my fuel system. and my truck showes code 542 fuel pump secondary circuit fault. It justg start one day after work . I started my truck and it died after few seconds I waited for few seconds and start again but it died again i was like that for about 10 minutes till stay on and I drove home 15 miles. next morning I started to go to work and did the same thing engine died after few seconds I try it three times and stay on I went to work I no more problems ,during weekend I checked the wires that go to Inertia switch cause every time it didnt start i didnt heard the fuel pump run. (long time ago I install a toggle switch on one of the wires that go to Inertia switch for safety) I removed the toggle switch and soldier a wire back in place. It was working ok but today when i was redy to go work it didnt start I cant herd fuel pump run , I check relay , and fuse and they look ok. Inersia swithc look ok as well. dont know what else can be wrong . I'll check selector switch tomorrow after work. Is any body have any ideas or had same proble I like to know what to chek.
93 F150 5.0


Thank You

Jaime