I have a 1994 ford f150 xl 4.9 straight v6 with dual gas tanks.
When I try to switch over to the front tank from the rear tank the truck stalls out and won't start. Why is this and how can I fix this problem? <PS> even if I switch over before I even try starting the engine the truck still won't start.

Bad switch
Bad gas change over solenoid under truck
Tank plugged up

Does it die out right away or slowly boggs down and dies
Fuel pump in tank or no power to it? The pump on the frame rail is high pressure pump and isn't able to SUCK the gas out of the tank, it has to get fead from the tank pump.
They use the pump pressure to switch the tank valve also.

I have the same problem on my 95 f150 and I only used the rear tank for about a year now and just today the rear started doing the same dang thing, so my truck is down and I haven't figured it out either so if you figuer it out please let me know

Check pump(s) in both tanks... that truck has 3 pumps on it.

Well ended up replacing both pumps and found a bad ground in the tank on one pump, but got it working
Good as new...

I have a 92 f150 it now won't start. When I attempt to start it, I hear a clicking sound from the solenoid. I replaced the solenoid and there is still clicking and won't turn over. Put a new battery in and still not turning over... any suggestions on what it can be?

davidcraigory, this link may help:

https://www.askmehelpdesk.com/cars-t...tml#post235560