Won't switch tanks...
Hotshot
Joined: Jun 2007
Posts: 10,008
Likes: 7
From: Austin, TX
Thanks Jim and Phil. I didn't know the selector valve did the electrical switching also. LOL
The selector valve shouldn't be a dealer only part.. The part stores have them for around $80, but IIRC they are universal. Not sure if they'll bolt right in with no modifications or not.
The selector valve shouldn't be a dealer only part.. The part stores have them for around $80, but IIRC they are universal. Not sure if they'll bolt right in with no modifications or not.
FOREIGN GURU
Joined: Jul 2006
Posts: 7,655
Likes: 7
From: Celaya, Gto. MX
Have you ever tore apart a selector valve? There is a little electric motor in there that turns a screw. The screw causes a unit to move laterally inside the housing that has two functions. First, the unit's motion operates a plunger that slides past the fittings that go to each tank, blocking off one tank at a time. Secondly, the unit has electrical connections on it that move with the unit. In one position it is connected to the wire the goes to the fuel level sensor for that tank. When you flip the switch the motor turns and the unit moves, switching which tank the fuel is drawn from, and which fuel level sensor is connected to the gauge. This is why there are five wires on the harness. I could get some pictures if you want.
So just because the gauge doesn't switch doesn't mean the switch is bad. It just means that the unit inside the selector valve isn't moving like it is supposed to.
So just because the gauge doesn't switch doesn't mean the switch is bad. It just means that the unit inside the selector valve isn't moving like it is supposed to.
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newandoldford250
1973 - 1979 F-100 & Larger F-Series Trucks
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