tank switching

[ericwade381]

well I recently found out that I have a hole in my front tank when I fill my tank full the fuel indicator only goes to about three quarters of a tank. I did notice before when I would try to switch tanks it was very slow to switch between the two tanks. Now when I try to switch tanks my fuel indicator does not move it just stays at the same location so I'm not sure if I am switching between tanks or not? Just wanted to see if there is something that I have to replace in the switch or what might be my issue. Thanks in advance!

 

[79jasper]

Probably the tank selector valve.
Take it off and clean it out.

Sent from my SM-T537R4 using Tapatalk

 

[madpogue]

You can hear the selector valve when it switches. Slide under and get your ear near the selector, and have someone switch tanks, key in RUN but engine OFF (so you can hear better). If you don't hear it, leave the switch set to REAR, and tap the selector with a mallet - once again, key ON engine OFF. Don't hit it hard, and keep your hearing tuned to it, and listen for it to switch when you tap it.

 

[ericwade381]

Guys sorry to ask...where is it located

 

[madpogue]

Driver's side frame rail, inboard side, about directly below where the driver's door handle is. Six fuel lines, and an electrical connector with five wires,

 

[mcghan]

had to replace the switch in my truck was a pain to find a new one and was costly,if i would thought about it i would have put 50 gallon tank in the bed and been done with it,i had to replace the rear pick up and sending unit and now have to do the front one,but i guess thier is something to to be said for having it right,but right cost more money usally

 

[ericwade381]

Thanks guys! How much are they new?

 

[ericwade381]

Could I be this lucky

http://www.ebay.com/itm/Borg-warner...:1988|Model:F-350&hash=item54183da03b&vxp=mtr

 

[mcghan]

did mine a couple years ago i am thinking it was$250-$300,it was in the shop for intermittent running issues and they went ahead and put it in,between pickups and sending units at $200 for each tank getting them right arent cheap

 

[ericwade381]

Wow that's why the previous owner had a fuel tank in the back!

 

[madpogue]

Could I be this lucky

http://www.ebay.com/itm/Borg-warner...:1988|Model:F-350&hash=item54183da03b&vxp=mtr

That's a selector for a gasser, or some other no-return system. Only three fuel fittings.

 

[OLDBULL8]

This is the one you need. May have to change the line connections. The dealers want $260 to $300. They are all made by the same company. Same selector valve all years, F250 thru F550.

http://www.autozone.com/fuel-delive...nders-f-7-3l-turbo-diesel/518461_686942_5320/

If you search, I have a thread showing how to take one apart and clean it.

 

[IDIoit]

here is the one i used on my 90 before i sold it... direct replacement.
if ya dont want to spend the coin, i suggest you do the mechanical tank switch mod.

http://www.ebay.com/itm/FUEL-TANK-S...r_Truck_Parts_Accessories&hash=item23375d631a

 

[ericwade381]

thank you guys! Is this usually what happens to these they get dirty and can be cleaned I will look for your thread on here! Thank you very much

 

[ericwade381]

is there a write up on the mechanical tanks Swhich mod?