Question about 1989 Ford F 150

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Duel fuel tanks

I can switch the switch from rear to front and it shows that tank is full but still drains from back tank. I know this because i ran out of gas with a full tank in front and switched to find rear tank empty

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You will need to replace the front intank fuel pump. the check valve in the pump has failed and the rear pump is pumping fuel into other tank ,

Posted on May 13, 2010

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1995 F150 (6 cyl) has duel tank fuel issue


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Apr 19, 2009 | 1995 Ford F150 Styleside Regular Cab

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The switch that you use to change tanks is probably faulty - the switch supplies power for the sending unit in the tank, and to the transfer switch for the gas lines - use a meter to check it

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