Question about 1984 Ford F 250

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I need to know how the power is routed through the fuel tank switch to the fuel selector valve and to the fuel pumps a schematic would be cool if possible

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Need email address then send diagram also which motor 2wd or 4wd

Posted on Feb 05, 2010

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1988 Ford F250 Truck, 460 automatic, dual tanks. I have no power to rear fuel pumps. Any suggestions?


Have you checked the control switch that powers each tank ? Some models use a mechanical selector valve and others use an electrical switch to control which tank is being used. Both tanks run off of the same fuel pump relay.

Feb 18, 2015 | Ford Cars & Trucks

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Poulanprop fuel line routing diagram


in 1980 it is pretty much forward from fuel tank to fuel pump from fuel pump to carburetor ....the return line from pump to tank

hope it helps

Apr 06, 2014 | GMC C1500 Cars & Trucks

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Fuel filter light comes on when change from rear tank to front tank fuel filter has been change, is there an fuel relay if is where,


I am guessing that your truck is a Diesel. There is no electric fuel pump on the diesel models. The fuel filter light comes on when there is not enough fuel pressure. Possible problems include the selector vavle not fully switching, and/or an obstruction in the pick up in the front tank.

the selector valve is located underneath the truck on the inside of the frame rail on the drivers side If I remember right. Try swtiching to the front tank and tapping the selector valve assembly. If that clears up the light then the selector valve is sticking and needs to be repaired or replaced.

Jul 23, 2011 | 1993 Ford F350

1 Answer

I have a 1995 f25,the back fuel tank doesnt work and the front tank drains intp the rear..what should i do


the fuel tank switch valve is bad. It is pumping fuel to the other tank instead of the engine. There was a recall for some models in 1989-91. I think you need a selector valve, just my guess.

here is some of what it says:

Your truck is equipped with a dual fuel tank selector valve which is designed to direct fuel to the engine from one fuel tank and returns unused fuel to the same tank. It is possible that the dual fuel tank selector valve on your truck could leak internally and as a result return a portion of the unused fuel to the tank other than from which it was drawn. Should this occur when the other tank is at full capacity, fuel could flow out the filler pipe of the tank past the cap. Fuel spillage in the presence of an ignition source, presents the potential for a vehicle fire.

Dec 18, 2010 | 1995 Ford F250

2 Answers

My f350 1997 will not run on the rear tank . how do i go about finding what the problem is?


well, first, to find out if its the in tank fuel pump or the tank selector valve, the cheapest and probable easiest thing to do is find the selector valve under the truck and switch the incoming fuel lines. front tank to rear tank inlet, and vice versa. If the truck still doesnt run, you either have an electrical delivery problem to the in tank fuel pump or a bad fuel pump. If after switching the lines, it does run, then you need a new selector valve

Sep 23, 2009 | 1997 Ford F350 Crew Cab

2 Answers

1987 f-150 dual tanks fuel problem


You are right. There are three pumps. It sounds like the transfer pump in the front tank is bad. The in tank pumps just supply the high pressure pump to keep it primed. You need the front pump.

Sep 21, 2009 | 1987 Ford F 150

1 Answer

I have a 1991 Ford F150 4 x 4 inline 6 4.6L. Dual


your truck is a 4.9L, make sure you have power to the front tank fuel pump. is the power to the pump is ok and you can hear the pump run for a second or two when you key the vehicle on... replace the fuel tank selector valve

Apr 17, 2009 | 1991 Ford F150

2 Answers

Where is the fuel tank selector valve exactly located


Just in front of the side tank is the selector.Very common problem.The rear fuel tanks pump quits.

Mar 30, 2009 | 1995 Ford F150 Styleside Regular Cab

2 Answers

When I switch from my front fuel tank to my rear tank gas stops


There is no selector valve on a 1995 ford f150 300 engine. The selector switch on the dash sends power to the pump in the selected tank. The pump then sends fuel to the engine. If engine won't run on the selected switch, the pump in that tank needs replaced.

Mar 28, 2009 | 1995 Ford F150 Styleside Regular Cab

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