Question about 1988 Ford F 250

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Fuel tanks not switching

88 f250 . i get fuel from the rear tank but not the front i think it is the fuel tank switching valve but cant locate it

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  • medley_r Mar 01, 2009

    yes it dies on the front tank but run fine on the rear .yes the fuel gauge changes when switched

  • Clint Smock
    Clint Smock May 11, 2010

    What does it do when you switch to the Front tank? does the truck die or does it continue to pull from the rear? Does the fuel gauge change when you flip the tank switch?

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  • Ford Master
  • 61,037 Answers

The valve is on the inside of the frame rail drivers side about middle of truck.

Posted on Mar 01, 2009

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  • Master
  • 4,669 Answers

It likely has a bad lift pump in the front tank. If this is a gas truck it has 3 fuel pumps, one in each tank (Low pressure, lift pumps) and one on the frame rail. Check for power and ground at the front tank for the lift pump.

Posted on Mar 01, 2009

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1 Answer

I have a 1997 F250, 460, Truck will not run on front tank, if I switch to the rear it runs great. If The truck is running on the rear and I switch to the front tank, the truck dies. Ideas?


Have the fuel pressure checked on the front pump when this happens. You either have a defective fuel pump, a defective switch over poppet valve or a defective dash fuel tank selection valve. switch.

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Where would the fuel tank selector valve be located at in a 88 ford f250 be at?


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1997 F250 with dual fuel tanks. Fuel from the rear tank siphons into the front tank. When I try using the front tank the engine cuts out under load. Also truck wont start using the front tank


If fuel injected. the tank selector valve switches both the suction line from the tank and the return line back to the tank. It sounds like you have a stuck or bad tank selector valve if the return is not being ported back to the rear tank.

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Front fuel tank not working properly


Your truck has a mechanical switch that may not be working. Check it for power and ground.

One of the problems with 2 tanks is a lot of folks only run off of one and then you can get a sludge build up and could have a plugged pick up line.
Try this remove the fuel cap for the front tank.
Disconnect the front tank fuel line from the switch valve.
If you are not getting a good flow of fuel using low pressure air no more than 25 to 40 PSI blow back into the tank.
Now do you have fuel flow?
Your switch valve may be plugged on the front tank side - If you are getting fuel to the switch valve and not through it I would replace the valve.
You may also have a bad dash switch
Hope this helps Please leave a testimonial if it does
Thanks
Scott

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1 Answer

My 1994 f250 will not start when the fuel tank toggle switch is on the front tank. it runs fine on the rear tank, im thinking clogged fuel filter or possibly fuel pump stopped working. where do i find the...


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I can't get the fuel to the engine from rear tank only


Does this have three fuel pumps? One in each tank and one on the frame rail. I know it at least has one in each tank. It doesn't have an electric switch valve. It has a mechanical one that makes sure the fuel returns to the right tank. When you flip the tank switch the power switches to the pump in the other tank.

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My 90 ford f250 runs on front tank but wont pull fuel from rear


It Maybe The Fuel Tank Selector Valve On The Frame Rail That Switch From From Tank To The Rear

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Location fuel filter 1990 F250 (dual tank)


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89d2f13.jpg

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1 Answer

88 Ford F250 rear gas tank will not work


Sounds like the rear fuel pump in the tank is not working and the float or sender is bad also. check to see if the rear pump is working should make a humming noise.

Jan 29, 2009 | 1988 Ford F 250

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