tank selector switch problem,i think?
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tank selector switch problem,i think?
i have my 1984 f250 diesel with dual tanks,when i switch to the rear tank the truck runs for a very short time and wants to die.also,when i switch to rear tank the fuel guage goes to empty even though it is full.i have checked the sender and it works fine,no cracks on tube either. i have replaced the selector valve underneath the truck with the same result.i am thinking it must be the switch on the dash.thanks for any replies or confirmations.
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Joined: Nov 2003
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From: Nutter Fort, WV
With the engine off and the key On, when you change tanks you should be able to hear the selector valve switch tanks. A little ziiiiiip sound.
I founf I had a connection problem on the wiring connector on the selector valve a couple years ago. A wire tie installed in the correct position fixed it.
Another problem you may be having is the O rings in the fuel line connector at the sending unit and at the selector valve. Since you have removed and replaced the connectors before, possibly one of the O rings cracked and is leaking air into the fuel lines.
I founf I had a connection problem on the wiring connector on the selector valve a couple years ago. A wire tie installed in the correct position fixed it.
Another problem you may be having is the O rings in the fuel line connector at the sending unit and at the selector valve. Since you have removed and replaced the connectors before, possibly one of the O rings cracked and is leaking air into the fuel lines.
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