Is my fuel selector switch bad?
I have a 93 f250
5.8 4x4 recenly I
replaced both fuel
tanks and pumps
and selector
switch..today I
was the first test
drive I filled front
tank full nothing in
the rear tank and
its totally empty
as selector switch
to front tank as I
was driving I
noticed fuel gauge
was dropping
quickly as if I was
gettting 3 miles or
less a gallon so I
decided to switch
to rear tank
knowing it was
empty the fuel
gauge moved
back up to full thru
all this the truck
ran with no
problems at all I
havent checked
fuel pressure
..would problem
be a faulty fuel
tank switch even if
it was replaced?
Sounds like the tank selector valve is stuck and returning fuel to the wrong tank. Some were electronic others were pressure fed to make the tanks switch.
OK thanks ...can someone direct me to exactly where this fuel tank selector valve is located ...I've looked up and down rail is it maybe after axle? both tanks were dropped and I still couldnt locate it.
It looks like this.
Drivers side inner frame rail about half way down.
