Fuel tank selector switch problem

Reply Subscribe

Thread Tools

Search this Thread

Sep 17, 2017 | 08:54 PM

Ryanandlydia0604

Thread Starter

New User

Joined: Sep 2017

Posts: 2

Likes: 0

Fuel tank selector switch problem

Hi. So if I bypass the selector switch, everything works well. When I try to go through the switch and select front or rear tank, no fuel gets to the motor. I've tested the pump and it works fine. Individually, no problems. Any ideas? 1973 F-350 super camper special with a 390.

Sep 17, 2017 | 09:58 PM

77&79F250

Moderator & parts slinger

Joined: Feb 2007

Posts: 50,189

Likes: 5,793

From: S/W Missouri, Polk county

Do you have a manual switch on the floor by the seat edge? Or a elec switch in the environmental control panel?

Yes yours is a 73 but..78/79 duel fuel tanks frame switch-Duralast/Universal 3 port fuel selector valve used with SW48 toggle switch Part Number: FSV4

Attached Images

Sep 17, 2017 | 10:14 PM

Ryanandlydia0604

Thread Starter

New User

Joined: Sep 2017

Posts: 2

Likes: 0

The manual switch on the floor

Sep 18, 2017 | 12:44 PM

user 478546

Cross-Country

Joined: Apr 2003

Posts: 52

Likes: 0

Ryan, I have a 1974. I had to replace the valve in the floor next to the seat. I bought it from a local hydraulics supply store. Do you need a brand/model number? The one I got wasn't Ford, but it works perfect. I suspect your handle and shaft is broken from the ball in the valve. PM me if you want me to dig up the info. Of course I'm assuming you already know that the switch up on the dash just routes fuel level sensor to the gauge panel and doesn't "select" fuel supply routing...

Sep 19, 2017 | 02:10 PM

user 478546

Cross-Country

Joined: Apr 2003

Posts: 52

Likes: 0

Ryan, this is what you need. The center outlet goes to the fuel pump. Point the outlets toward you. The outlet to the left is for the MAIN. The outlet to the left is for the AUX. Reuse the hardware from the valve currently installed in your truck. It's a couple bolts, washers and nuts. I posted a link to your profile visitor page. You should turn on your private mail PM if you can.

Attached Images

Mar 19, 2019 | 11:58 AM

best0186

New User

Joined: Aug 2008

Posts: 3

Likes: 0

Where did you get this replacement valve at? Thanks.

Mar 19, 2019 | 07:51 PM

NumberDummy

Ford Parts Specialist

Joined: Nov 2006

Posts: 88,826

Likes: 785

From: Simi Valley, CA

Quote:

Originally Posted by Ryanandlydia0604

Hi. So if I bypass the selector switch, everything works well.

When I try to go through the switch and select front or rear tank, no fuel gets to the motor.

The selector switch has nothing to do with fuel.

1973 F-350 super camper special with a 390.

1973/74: The selector switch only changes the dash fuel gauge from one tank to the other.

1973/74 with dual fuel tanks have a manually operated fuel tank selector valve located on the floor adjacent to the drivers side of the seat.
------------------------------------------------------------------------------------------------------------------------------------------------------------
1975/79 with dual fuel tanks have a fuel tank selector valve & solenoid assy mounted on the cross member.

The selector switch changes the tanks and the dash fuel gauge from one tank to the other.