removing rear tank
Cargo Master
Joined: Mar 2007
Posts: 2,935
Likes: 34
From: Arcadia, Fla
I removed the rear tank on my 89 F250, also removed that fuel selector and ran the lines directly to the front tank. Just make sure you don't flip the fuel tank switch. That will kill the in tank pump but not the HP frame rail pump and give you a low/no fuel pressure and a pegged fuel gage too.
I took out the rear tank as it was dead and full of crap(old gas that turned into tar), plus my wife filled it up and then ran out of gas for some reason".... I put $60 ...... still shows empty...." asked "....which tank you filled up?, the rear one....."
I took out the rear tank as it was dead and full of crap(old gas that turned into tar), plus my wife filled it up and then ran out of gas for some reason".... I put $60 ...... still shows empty...." asked "....which tank you filled up?, the rear one....."
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 36
Likes: 0
i'll look into 2 of those valves if i can't figure it out soon
i need to check the supply line for the rear tank first to make sure its not kinked at all, hopefully i can see the lines well enough with the bed on, if not, it might be coming off for a day... we'll see about that.
i've been thinking of doing something similar to that, but since both tanks and pump assemblies are only 2 months old, i've decided i'll keep the rear on, just try to get it operating properly.
i need to check the supply line for the rear tank first to make sure its not kinked at all, hopefully i can see the lines well enough with the bed on, if not, it might be coming off for a day... we'll see about that.
i've been thinking of doing something similar to that, but since both tanks and pump assemblies are only 2 months old, i've decided i'll keep the rear on, just try to get it operating properly.
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 36
Likes: 0
alright, well i guess since its too dark out now, i'll just siphon gas out of it now, and crawl under the truck tomorrow whenever i get home from school.
if i absolutely have to, the bed might come off, since i'll have time this weekend to work on it (if work doesn't call).
if i absolutely have to, the bed might come off, since i'll have time this weekend to work on it (if work doesn't call).
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 36
Likes: 0
i just got done crawling around looking at the lines for my rear tank, and they're not kinked.
i got a quote on the price for a new switching valve for my truck from the local ford dealer, and has a $227 price tag on it.
i also heard today that back in the day, when these were new, when they had a similar problem, the dealers would just put check valves on the lines and that was it. does that seem to be right?
i got a quote on the price for a new switching valve for my truck from the local ford dealer, and has a $227 price tag on it.
i also heard today that back in the day, when these were new, when they had a similar problem, the dealers would just put check valves on the lines and that was it. does that seem to be right?
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
That's right.
There is a TSB on the issue, I forget the #.
Dealer service would place a check valve in each return line.
There is another thread going with more information about the valve problem.
Edit: Here https://www.ford-trucks.com/forums/1...-problems.html
There is a TSB on the issue, I forget the #.
Dealer service would place a check valve in each return line.
There is another thread going with more information about the valve problem.
Edit: Here https://www.ford-trucks.com/forums/1...-problems.html
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 36
Likes: 0
so that leads towards the tank selector valve, the in dash switch, or the in tank fuel pump...
i bought the pumps at autozone, so i still have warranty on them, would it hurt to try and replace that again?
we suspected it once, and its been changed, if it is the pump, i could keep swapping until i get a good one
i bought the pumps at autozone, so i still have warranty on them, would it hurt to try and replace that again?
we suspected it once, and its been changed, if it is the pump, i could keep swapping until i get a good one
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
I don't think it's the NEW pumps.
You could check that by jumpering power directly to them, rather than pulling them down.
Do some testing....
Sometimes an old piezo door chime with a probe and an alligator clip works better than a meter.
You can be in the cab or under the hood and *hear* that there's current at or out of the selector, tank, taillight, whatever...
You could check that by jumpering power directly to them, rather than pulling them down.
Do some testing....
Sometimes an old piezo door chime with a probe and an alligator clip works better than a meter.
You can be in the cab or under the hood and *hear* that there's current at or out of the selector, tank, taillight, whatever...
Senior User
Joined: Nov 2010
Posts: 273
Likes: 0
From: in the shadows
Jim, can he run a very long jumper wire from the battery directly to the pump? Like, maybe unplug the pump from the bunch of wires it plugs into, and then stick the wire from the battery into that plug?
Thread Starter
|
Freshman User
Joined: Oct 2010
Posts: 36
Likes: 0
the switch in my dash is what activates the individual pump. the valve on my truck is all mechanical and relies on the pressure from the pump to switch between which tank is being used. so i figured if i disconnect the hp pump on the rail, and cycle the key with a line off, it would allow the switch to activate the pump and test its flow that way
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
This is what I was trying to suggest in post #25