Question about 1995 Ford F250

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I can't find the electric valve that changes which tank (main or aux)is being used? Nor can I find a fuse for this circuit. Main tank is only one that can be used all of a sudden with no clue why?

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  • Lee Allison Oct 03, 2009

    Thanks for the insight. I wonder does this mean that I may have a faulty pump in the aux tank? I was told by someone that only the main tank had the fuel pump? Does this mean both tanks are filtered by the same filter?

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  • Ford Master
  • 74,945 Answers

There is no electric valve, here is how it works, there is a large black plastic cannister, it has what are called popit valves in it, u can ID this by all the fuel lines going to it, it is on the drivers side just aft of drivers seat under the truck, when you switch tanks the fuel pump in the tank selected is switched on and the fuel level sensor is connected to the gauge, the fuel pressure from the electric pump in the tank selected pops the valve open and delivers fuel to the engine, if u don't understand this give me a call 925-459-0571

Posted on Oct 01, 2009

  • yadayada
    yadayada Oct 03, 2009

    you're right you have a defective fuel pump.

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CAUTION Never replace a blown fuse with one of a higher rating. Severe damage to the vehicle, electrical harness and components, as well as personal injury or even death could occur.
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(see Figure 1)
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019fba1.jpg

Fig. 1: Remove the fuse box cover, located in the engine compartment, to access the main fuses for the vehicle
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  3. If replacing a relay at the interior relay box, simply unplug the relay.
  4. Installation is the reverse of the removal procedure.

410a634.gif

Fig. 1: Typical fuse box and panel locations and configurations


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