Fuel Tank selector

Reply Subscribe

Thread Tools

Search this Thread

Aug 12, 2012 | 06:20 PM

BKTow

Thread Starter

New User

Joined: Aug 2012

Posts: 4

Likes: 0

Fuel Tank selector

Hi all, New here 1st post.....Problem is on my 1994.5 7.3-DI, the fuel tank selector goes to "E" on the front tank (Not reading) and works fine, when switched to rear tank.

Any suggestions before I drop the tank to swap the FSU?

Could the fuel tank selector "Switch" be bad?.....What should I diagnose?

Any suggestions welcomed.....really not looking forward to dropping the fuel tank........

Thanks,
Louis

Aug 12, 2012 | 06:24 PM

fordpride

Post Fiend

Joined: Dec 2009

Posts: 15,505

Likes: 18

From: Livoina,La

Welcome to FTE !

With the truck running when you flip it to that tank doe it stay running or does it die after a few mins?

Aug 12, 2012 | 06:28 PM

BKTow

Thread Starter

New User

Joined: Aug 2012

Posts: 4

Likes: 0

Thanks, Glad to be here..........Stays running.

Aug 12, 2012 | 07:02 PM

fordpride

Post Fiend

Joined: Dec 2009

Posts: 15,505

Likes: 18

From: Livoina,La

Is this on the rollback in you avitar pic?

Aug 13, 2012 | 10:52 AM

farmert

Lead Driver

Joined: Mar 2006

Posts: 5,104

Likes: 1,517

From: western SD

If the truck runs well on both tanks, the front tank probably has a bad float, or circut board on the sending unit.

Aug 13, 2012 | 02:20 PM

BKTow

Thread Starter

New User

Joined: Aug 2012

Posts: 4

Likes: 0

Quote:

Originally Posted by fordpride

Is this on the rollback in you avitar pic?

Thats the one.

Quote:

Originally Posted by farmert

If the truck runs well on both tanks, the front tank probably has a bad float, or circut board on the sending unit.

So either way, FSU, or the board on the fuel tank selector?........Drop the tank

Any luck with aftermarket FSU's or OEM?

Aug 13, 2012 | 03:56 PM

farmert

Lead Driver

Joined: Mar 2006

Posts: 5,104

Likes: 1,517

From: western SD

You should be able to get to the front tank if you roll the bed back, so no need to drop the tank. Pull the sending unit from the tank and ohm it out while moving the float from empty to full position. If the ohm values change the board is good. I don't recall if you get more or less ohm values while moving the arm, they increase I think. If the float has a hole in it, they can be bought from the dealership. A whole lot cheaper than the complete unit.