TBI fuel pump shenanigans

[dyeager535]

It's so refreshing here to read how so many of you folks actually know what the oil pressure switch does on a TBI fuel pump circuit.

That "engine safety feature" has been a wide spread old wive's tale for so long. And then it spread like wildfire with the popularity of the internet.

Didn't ford actually use some sort of rollover switch that would kill the fuel pump? I always figured a lot of the myth came from people assuming GM had similar. Since Ford did it, not too much of a stretch to think GM may have as well, even if that's not what it really is.

Proper wiring diagrams in the past also were not nearly as easily accessible as they are now either, so if people started saying it back when the trucks were new, most people wouldn't have had the tools available (or experience) to know any better, leading to a very widely held belief.

 

[flatland]

Ford switches didn't even have to have a roll over. A hard bump or sometimes nothing at all would kill the fuel pump until the switch was reset.
( my experience with an Explorer and 4 Rangers)

 

[Fastereddie]

Ford switches didn't even have to have a roll over. A hard bump or sometimes nothing at all would kill the fuel pump until the switch was reset.
( my experience with an Explorer and 4 Rangers)

Inertia switch. My ford probe had one behind the panel in the hatchback area. Took me a while to find it after a fender bender. Just reset it like a push button circuit breaker.