Inertia switch 98 f150

[MRM]

So my new to me 98 F150 died right there going over an inclined set of railroad tracks. Coasted over to the shoulder.
Couldn't hear the fuel pump.
Swapped around the relays. Didn't test them yet but confident enough they are working.
259K. No history if the fuel pump has been changed.
I am 6hrs from home so I can leave it for later when I have better tools.
I learned about the inertia switch so I will check it tomorrow and test the relays.
Had a full load in the truck. Going over the tracks it just died.
It did throw a code, I don't think I "need" the code reader.

I'm really curious if anyone has had a bad inertia switch. I prefer to troubleshoot instead of throwing parts.
I will have about 30 minutes to troubleshoot before I just leave it for later.

 

[Greybeard]

Right side kick panel, they do trip and I think can be reset.
If pump relay went out you can jumper the two large terminals with a paper clip, that would get you home.
Not the safest thing to do but it works.

 

[MRM]

I am good there, I left home without my voltmeter.
I just hope it is the inertia switch.
85$ tow for 5 miles lesson if it is.

 

[MRM]

I had no service on my phone or I probably would have found it.
Luckily my uncle was with me and could call for a tow.

 

[Kyzrsoze]

Right side kick panel, they do trip and I think can be reset.
If pump relay went out you can jumper the two large terminals with a paper clip, that would get you home.
Not the safest thing to do but it works.

My Crown Vic died the same way. In my case it was the fuel pump relay. I swapped in one of the other relays from a less critical system to get home.

 

[MRM]

The three relays were swapped around several times and were actuating. I didn't methodically test them by sounding the horn.
I will put the test meter and jumpers on them tomorrow.
I think it is downstream of the fuse and relay.