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Can anyone explain to me how the Dual tank fuel system works in a 90 or so model? Thanks.
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Travis answered 14 years ago
what do you want to know other than its two separate smaller fuel tanks
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texascowboy1809 answered 14 years ago
How it works. does it feed from both front and the rear or does it pull fuel from just the rear and siphons fuel from the front?
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Josh answered 14 years ago
the system draws from on tank until the switch is flipped then thit activate a module down on the frame rail just behind the cab between the rail & the front tank, that tells witch fuel pump to turn on, wich is likley the cause if your truck will oinly pull fron one tank
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texascowboy1809 answered 14 years ago
well here is the freaky thing. I think it was siphoning fuel from the front tank to the rear tank. I flipped the switch to the front tank and started driving, then i flipped it back to the rear tank and it was full, whereas before i had a quarter of a tank in the rear.
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Josh answered 14 years ago
the switch module on the frame is toast. there is check valves in it so that doesnt happen
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Yaris_12046 answered 7 years ago
How does the fuel tank work on 7.3 V8 f250
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CarGuyphill answered 6 years ago
Two tanks one pump or two pumps
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GuruZ6K3Z answered 5 years ago
My 1993 F-150 has to fuel tanks, which one should I use, please help?
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GuruT6BWR answered 5 years ago
My 1995 F-150 won't start it turns over good but won't start I replaced the dual tank switch which is what they said was wrong it ran for a couple months now the same thing happened again can I eliminate the dual tank switch and just use the front tank
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GuruT313S answered 5 years ago
11/1993 4.9 has no switch moduall or high pressure pump. The pcm controls the pump pressure. Note, the pcm is receiving inputs from a variety of inputs,
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Howard answered 5 years ago
I'm having the same issue where it seems like gas is being siphoned from one tank to the other and I'm wondering if anybody has a quick fix for this or if that module just absolutely has to be replaced? I don't mind using only one tank for the time being if that is doable. Thank you in advance
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Carl answered 5 years ago
I have a 1997 Ford F-350 with dual tanks I want to do it with the back tank how can I do it with that
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Carl answered 5 years ago
So there's no way you can do away with back tank
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Becca answered 5 years ago
If both the front and back tank are full which one should I use first?
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Seek1custom answered 5 years ago
You could use the front or the rear doesn't matter
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Fromtoptobottom answered 5 years ago
I have replaced both fuel pumps and all the lines the fuel filter and the fuel still will not pump up can anyone help me cause i still cannot get my truck to start.pressure regulator
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Fromtoptobottom answered 5 years ago
And i also cannot hear the front pump kick on the back one does not the front i thought i got a bad pump so took it back and parts store replaced it for me stll cannot hear it kick on can hear back one kick on not front one
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GuyinthePinktruck answered 5 years ago
Maybe it's the fuel pump relay, have you checked for power to the fuel pumps.
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GuruS1KDY answered 5 years ago
What do I do if I put gas in my diesel truck 1990 F250
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Jon answered 4 years ago
sell it
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GuruHQ6SQ answered 4 years ago
I thought it was a looped system.
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Hawkman68 answered 4 years ago
I have a 1985 F-150 XLT it has dual tanks it doesn't matter which tank I'm on after a while it starts acting up like there's no gas in the tank if I switch from the rear to the front it stops but then it starts up again even though it's on the front so I switched back to the rear and it will go for a while and then it act up again like it has no gas I need to know if the fuel pumps in both tanks are bad or if it's the fuel switch that could be bad
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Heather answered 4 years ago
I have the same issue as you @hawkman68 — any luck?I have. 94 f250 460 engine
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Guru9WNX9H answered 3 years ago
I have duel diesel tanks. The front tank has a hole in it can I still use my truck with only the rear tank?
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jsk6480sm answered 2 years ago
Could be water in the fuel.
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