2000 ford E350 EB duel fuel tanks not switching over

[Westcoast]

Hello everybody I have a 2000 Ford Sportsmobile extra body with 2 30 gallon diesel tanks and I’m not sure how the function works by transferring fuel from the back tank into the front tank. It seems to no longer be pumping out from the rear tank. does anybody have any insight on this? Thanks

[1der]

Do you have the Transfer Flow TRAX2 rear tank with the digital control/display module to the left of the steering wheel?

[Westcoast]

Originally Posted by 1der

Do you have the Transfer Flow TRAX2 rear tank with the digital control/display module to the left of the steering wheel?
Attachment 46936

I do not, but as I look at the location in your picture, it looks as if something may have been there before I owned the vehicle there’s a few holes in that spot. It has a toggle switch that when the front tank is empty, you switch over and it pumps from the back tank into the front one. It always took quite a bit of time but now, for some reason it’s not transferring fuel from the back tank to the front, I can hear the pump making noise but it’s not filling up the front tank. Not sure if there’s some thing I can do to change that whole feature that won’t be super expensive. Thanks 🙏

[1der]

Okay, some more questions:
How does the rear tank fill? Second filler neck?
Does the switch have only on/off, or on/off/on?
The pump you hear, is it inside the tank or external?
How much fuel is in the rear tank?
Where are you located? (consider adding to your profile info)

Some pictures of the rear tank and hoses would help.

The whole Trax 2 system was designed to transfer fuel to and from the rear (Aux) tank. It kept the fuel amounts in the tanks in balance. Nice but really complicated. It typically was ~ a 24 gallon rear tank with an internal pump, this was mated w the stock main tank. Is there some documentation you have that specifies 30+30?

Thanks.

[Westcoast]

Hey Ray, thanks again I’m currently in Costa Rica but my van is in Florida right now so I am unable to take any pictures as for the 30+30 tanks that’s just what I was informed when I purchased the vehicle and I just have a switch that is on off and the rear tank fills from a second neck.
As for the pump I’m really not sure I haven’t been able to locate it visually yet. I just can hear it pumping when I flip the switch on. Before we came to Costa Rica, I was fueling up and thought I had transferred the rear fuel to the front and when I went to top off the rear tank, it was still full.