Aftermarket Fuel Selector Valve - Ford Truck Enthusiasts Forums



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Aftermarket Fuel Selector Valve

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Old 02-03-2011, 12:52 PM
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Aftermarket Fuel Selector Valve

So, while diagnosing my fuel system, I snapped of one of the ends of my current fuel selector valve while trying to untwist a line. Mine looks like this:
1983 Ford Bronco '84-89 Fuel Reservoirs picture | SuperMotors.net

I snapped off the one that's on the right in the picture, at the bottom. I'm assuming it's for the evap system somehow? It was totally dry.

Well anyway, Rockauto stocks this one, More Information for ACDELCO U7001
which looks nothing like mine. I like the idea of it being switched electronically, but i'm not sure how it mounts up and hooks up. Anybody run one of these?

If anybody wants to chime in on my problem as well, I can only get about 20 psi of fuel pressure, and it takes 20-30 seconds to get there. I have battery voltage at the fuel pump on the frame rail. The rear in-tank pump sounds like it's running but the front in-tank pump doesnt. I had been running on the front tank, so I'm thinking maybe that in-tank pump is dead, and the extra stress of running without the in tank pump killed the pump on the frame rail?

This two tank system is pretty rediculous in my mind...so many parts. I can understand why they don't make vehicles with 3 fuel pumps anymore! If anyone has an idea for an aftermarket-type design that works better, i'm all ears

By the way, this is on an '88 F150, 4.9, 5 speed, with dual tanks
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Old 02-03-2011, 09:20 PM
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Any experience with this stuff?
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Old 02-04-2011, 08:50 AM
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I have not heard much about that AC Delco selector switch. There was a thread last fall about using a similar valve made by Pollak. It was general consensus that one did not have a high enough pressure rating to work on a fuel injected engine.

I could not find any info on the AC Delco valve you posted. I do know the replacement dual selector valve is available from Ford. It's part number should be F1UZ9B263B. A few vendors on this forum can get it to you at a discount price.
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Old 02-04-2011, 09:19 AM
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The AC Delco that you posted is for the Diesel trucks and some 460 trucks and RVs with carburetors.

It has no reservoir and all of the Ford high pressure fuel pumps need the reservoir weather the reservoir is in the tank as in 1990 and newer trucks or on the frame with frame mounted high pressure pump as on the late 80's trucks.
Without the reservoir you can have fuel problems going up hills and when going to WOT. You can also have surging problems without the reservoir.

Both of the lines on the right of the photo are for fuel. One is the fuel supply to the engine and the other is the return fuel from the fuel pressure regulator to the tank from where it came. You must have more than 45 PSI fuel pressure while cranking for the return fuel line to have fuel in it.
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Old 02-04-2011, 11:10 AM
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This is interesting, because it looks like other websites suggest this valve for the 300 gas engine as well...the electronic valve. Maybe it's a mistake on their behalf, or the part is just carried over from the carbeurated years. I know the names "fuel selector valve" and "dual funcion reservoir" aren't interchangable, but it didn't dawn on me the electric valve wouldn't work until I realized the second part of its purpose. Thanks for the part number.
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1987, 1992, 73l, 84, diesel, f150, f250, f350, ford, frod, fuel, oem, selector, switching, u7001, valve

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