Couple dual tank issues
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
Couple dual tank issues
I have a '88 F250 with a couple of dual tank issues, first of all if I'm running on the rear tank the fuel returns in the front tank.... not an isssue if trhe front tank is empty, but if both tanks are full the front tank will overflow. If the front tank is empty I run on the back tank until I'm out of gas and switch to the front and I"ll have about a half a tank in the front tank.
Second issue, running the front tank the fuel gauge stays on full until I have about half a tank, then it works OK. If I'm running the back tank it stays on full, even after the tank runs out of gas??
Second issue, running the front tank the fuel gauge stays on full until I have about half a tank, then it works OK. If I'm running the back tank it stays on full, even after the tank runs out of gas??
Elder User
Joined: Jan 2008
Posts: 825
Likes: 2
From: SW Washington coast
As for the return lines ... You might have to change to a selector that has 2 return lines ...
As to the rear tank gauge ... Check the ground from the tank to the frame ... Sometimes there is rubber on the tank straps and that can insulate the gauge from the frame ... And grounding your tank is a good thing anyway ...
As to the rear tank gauge ... Check the ground from the tank to the frame ... Sometimes there is rubber on the tank straps and that can insulate the gauge from the frame ... And grounding your tank is a good thing anyway ...
Thread Starter
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
magusjinx, thanks for the reply...... just crawled under the truck and found what I think is the selector switch, four lines coming out the back, two on top and two on the bottom. Just ahead of the switch is a fuel pump and just ahead of the pump is the filter. I'll look again later an see what I find on the grounds.
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Elder User
Joined: Jan 2008
Posts: 825
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From: SW Washington coast
Hey parts guy ... You are about 5 hours away too ... lol ...
Iantiler ... I may be wrong (and I am sure someone will correct me if I am) you should have 2 lines connected to each tank, one out and one return ...
Iantiler ... I may be wrong (and I am sure someone will correct me if I am) you should have 2 lines connected to each tank, one out and one return ...
Thread Starter
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
Parts-Guy, got your web page saved in favorites, magusjinx I'll run the lines out tomorrow...... there's four lines coming out of the valve, I sure you're right on the two for each tank. What is the correct name for the valve?? I did a search on Parts-Guy's site..... didn't find it, most likely got the name wrong. Thanks.
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
I looked earlier, they're not listed in ftepartsguy (Ed's) online catalog.
The OP didn't really specify what fuels the engine, so...
There are two types, depending on the type of engine, gas or diesel.
Parts catalog lists two different part numbers for gas, one number for diesel.
All these valves have Ford ID numbers on them, they're moulded into the plastic.
Parts catalog calls one a selector valve (diesel), the other (gas) is called a reservoir & selector valve.
Because FTE was moving so slow, then died...I couldn't answer the thread originally.
Diesel: 6C3Z9189A (replaced E9TZ9189A) MSRP: $168.00 / ftepartsguy.com price: $120.96 / Original marked E7TB9F271AA
There are two different gassers. One is marked: E7TB9B263AB = The original part number (E7TZ9B263A) has been updated. Even with all the resources I have, I couldn't find the new number.
The other is F1UZ9B263B / MSRP: $135.00 / ftepartsguy.com price: $72.90 / F1UZ9B263B is an updated part number, the marking reflects only the new part number, and may not match the original.
The OP didn't really specify what fuels the engine, so...
There are two types, depending on the type of engine, gas or diesel.
Parts catalog lists two different part numbers for gas, one number for diesel.
All these valves have Ford ID numbers on them, they're moulded into the plastic.
Parts catalog calls one a selector valve (diesel), the other (gas) is called a reservoir & selector valve.
Because FTE was moving so slow, then died...I couldn't answer the thread originally.
Diesel: 6C3Z9189A (replaced E9TZ9189A) MSRP: $168.00 / ftepartsguy.com price: $120.96 / Original marked E7TB9F271AA
There are two different gassers. One is marked: E7TB9B263AB = The original part number (E7TZ9B263A) has been updated. Even with all the resources I have, I couldn't find the new number.
The other is F1UZ9B263B / MSRP: $135.00 / ftepartsguy.com price: $72.90 / F1UZ9B263B is an updated part number, the marking reflects only the new part number, and may not match the original.
Thread Starter
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Mountain Pass
Joined: Jun 2008
Posts: 173
Likes: 11
From: Danville KY
Thanks everyone for the help, sorry I didn't say in my post it's a 460. Number Dummy if you would be so kind to give me the correct part number I can put in my note to Parts-Guy. Iantiler
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 787
From: Simi Valley, CA
Look at your old valve for the ID number.
If you can't find it, just give Ed the application.