Fuel Sender in long Range Tanks

It is due to the non uniform or non square/cylindrical shape of your long range tank.

To get the maximum volume for your vehicle, the tank manufacturer has made the most of available free space under your 4by... now you want a symetrical fuel guage reading... ?..miracles stopped a few thousand years ago... :oP

Maybe just get used to the guage readings with the new tank..I did....and enjoy it's long range benefits.

bernie
I also have a 145ltr tank, these tanks are deeper and much larger than the original tank. When we fitted it we set the sender to read the bottom of the tank as accurately as possible, I then filled the tank absolutely full on as flat a drive that I could find, l then ran the tank down to the point of the fuel light coming on, when l then refilled it to absolutely full at the same pump as before, l noted how many litres its took to get back to the starting capacity, this will then tell you how much fuel you have left when the light comes on and allows you to know with reasonable accuracy how far you can travel with the light on.

to me this is important as during the modifications to TONI l lost the reserve/sub tank due to transfer case position of new engine & transmission.

Colin.

I have a long range tank on my Rodeo 98 same thing starts off as full then when the gauge starts to drop I know your about half full, you just get used to it.
I've had it for 6yrs and I know when my fuel light stays on I have got 140 k's left in he tank.
Reilly

I put a Longranger tank in a Patrol an tried to bend the wire on the sender to give correct readings.

I found it fouled on the edge of the compartment so bent it back to normal and it was fine.

You only need to know how empty a tank is so you can fill it.
.

You will know when its full when it dribbles out the filler.

I have a longranger in my cruiser and had a similar problem, i adjusted the arm best possible as it will not reach the bottom of the tank,mine is a 122l tank and it will do about 550k's before it starts to move,then gradually drops to empty over the next 250 odd k's. when i fill it takes about 90 ltrs. so i have about 30 ltrs left but am unsure as to how far in the bottom of the tank the pickup is,as i have never done more than about 40 k's with the light on. also i dont wish to run it dry to find out as electronic pumps are way too expensive to replace!!!

Had that problem in my Patrol and have that problem now in my 4Runner. My 4Runner reads full till about 550km on the odometer, then it drops down. When it reads 1/4 I have about 15L left. I've just learned to live with it. I recorded some values in my owner's manual so if I forget I can read up on it. I think in order to make it work properly you need to lengthen the float arm, if it's a float arm type sender. I never bothered with it as it's to hard to get the tank out.

Louie

Same same - have identicla problem n the 80 series 175 liter long ranger at rear - reads full till its below half - then reads the rest of the tank as normal.

With the F 250 a little different. It has 2 long range tanks for a total of 250 liters, connected with a small equaliser tube to allow the fuel to flow between the two tanks as necessary.

When you park on a hill and are not ful - most of the fuel flows into the downhill tank and depending which one you have your selder in it reads 3/4 full or empty when it has only about 1/4 in it.

Once mobile and level the fuel equals out again and it goes back to reading normal.

Keeping it full is one option but I do so few K'ms I don't want a tankfull sitting round in the tank all year going stale, not to mention the extra weight when running around the city, not to mention it costs about $400 to flill it up!

Cheers