DTE with the Long Range America 35 gallon fuel tank (500+ miles range now)

[Raptor Family]

Reading this is a little disappointing, but hopefully a solution will pop up.

And to those that asked why a long-range tank, it's mainly for overlanding.

Yes, it is disappointing. These tanks were advertised and sold stating you could recalibrate, using Forscan, so that your fuel gauge and DTE would be correct.
this is true up to model year 2024 on US spec trucks. I read about, and saw several videos of people installing these tanks and recalibrating them with this working correctly—and is why I wanted one of these tanks. The problem is on 2025 and later trucks the published procedures for Forscan doesn’t work. On early model trucks the module that receives the information and has the fuel tank capacity stored—and where Forscan makes the changes to, are in the dash module. In 2025, Ford change the way the system receives/stores data and has the fuel tank information now in the ECU. You can still find and see the legacy information in the dash module on Forscan, you can even make changes to it just like before—it just doesn’t do anything anymore as the ECU does it now.

Sponsored

 

[Raptor Family]

Do they have a fix from Down under members to fix this issue?

The Down under (Thailand produced) trucks never changed—only the U.S. trucks from 2025 on.

 

[Raptor Family]

@Raptor Family I have some questions about the larger fuel tank. When you fill up what does the gauge say on the dash? Does it work at all? Say you drive 200 miles, will the gauge show empty?

Have you calculated anything with the larger tank yet? I usually reset my trip meter when I get fuel so I guess you could keep track with that.

Yes, the gauge responds to fuel levels--its just wrong. It seems, when you fill it up, it stays on full longer-a lot longer. I think this is because of the the new tank having the top of the tank extended above the original tank where the Pump/Sending unit is still located in roughly its original level--meaning in reference to the original sending unit location, there is now 5-10 gallons more fuel above the Pump/Sensor Mounting flange, which would have to be burned off for it just to read what was normally "full". Also, at the empty, by math, there are about 10-15 gallons still in there. The low fuel warning lights up and the Distance to empty is completely out of whack--as is the estimated mileage. I think there is still about 150 miles of fuel still in there when it first reads empty. What really sucked, was that I had to turn the truck in for warranty--they disconnected the battery and my trip odometer reset--That was the only way I was guessing how much fuel was roughly in the tank. They had the truck for so long, I couldn't remember if I had a few miles on empty, or a lot of miles--like over 150. When I got it back, the truck said zero miles to refuel, and it had the empty alert on.

The truck, from what I have read, is supposed to have some sort of "relearn" function. however, It will never relearn 35 gallon capacity, but it might partially learn full to empty (sort of). I have not been able to tell yet. It was at the Ford dealer and had the battery disconnected, and after a short bit of driving, it seemed like maybe it was learning--then, it had the battery disconnected again when new Fuel Injectors/pump were installed. Then, it went to Dyno/Tune where it has been for last 2 weeks.
What was frustrating was when it kept losing the trip odometer data, everything went back to zero--I had no clue as to the amount of fuel I had. When I took it to the Dyno shop, I needed to have about 3 gallons or less of fuel--just enough to make a few pulls on 93 octane gas. I couldn't have a lot of fuel in the tank as I was converting it to run on ethanol. The tank had to be drained completely and re-filled with e85 ethanol. When I was driving to the Dyno shop, the gauge read empty--I did not know if I had one gallon in it or 10 gallons, I was afraid of running out of gas and being stranded in the middle of hectic Dallas traffic. I stopped and added 5 gallons--just enough to turn off the fuel light and barely budge the needle--just to be safe. Filling it while trying to read the gauge is slow--when the gauge barely moved, I shut off pump--minutes later, after driving, it went up and showed about 1/4 tank. As I am typing this, after a few pulls on the dyno, I can read from my Ford Pass app that it has 9% fuel remaining capacity and 48miles to empty--which I think is actually about 18 gallons. That is just wrong.

 

[Raptor Family]

That is not the problem; before adding the extended tank, when the gauge read a quarter tank remaining, it was about 5 gallons. With the 35 gallon tank installed, a quarter tank is about 20 gallons remaining (the entire original tank volume). The actual tank volume does not register with 1/4, 1/2, or even full.
If you re-fill at 1/4 tank, you are not using the added capacity—why even get a larger tank? You are missing the part, when the tank reads empty, there is about 10-15 gallons still in it. Now, we can do math; at every fill up, reset the odometer and on 93 octane calculate about 500miles to the tank. So when you reach about 375miles on the odometer, that is about 1/4 tank, time for refill.
The tank was advertised that the fuel capacity was able to be modified—that, so far, has not been true. Had I known that before hand, that Forscan would not adjust the tank level, and there was no work around, I could have tried something different. I believe knowing when it is empty is far more important than knowing when it is full. I’m thinking about pulling the tank back out, removing the pump/sensor module, and bending the float arm down to about 1/2” from the bottom of the tank. My idea is that bending the arm down will make it read “full” for a long time until it is about 1/2 tank. But, when it reads empty—you are empty. Maybe at the last bar on the gauge, which might be a quarter tank, refill. It is possible even the refill reminder might work close to being correct. On some newer f150 trucks, with extended fuel tanks, they have added intercept modules that intercept the fuel sender signal and modify it to create a correct reading on the fuel gage and DTE—maybe someone will make one of these for the Ranger Raptor. Maybe someone can figure out how to change the tank volume in the ECU—now that it has been hacked by companies like HP tuners, Cobb, etc

I said that backwards--bend the arm of the float up

 

[pablo94sc]

If it's in the ECU now, then I would think a tuner could possibly make the changes. I'd reach out to GooseTune to see what he thinks.

 

[Stumpm2]

Yes, the gauge responds to fuel levels--its just wrong. It seems, when you fill it up, it stays on full longer-a lot longer.

The truck, from what I have read, is supposed to have some sort of "relearn" function. however, It will never relearn 35 gallon capacity, but it might partially learn full to empty (sort of). I have not been able to tell yet. It was at the Ford dealer and had the battery disconnected, and after a short bit of driving, it seemed like maybe it was learning--then, it had the battery disconnected again when new Fuel Injectors/pump were installed. Then, it went to Dyno/Tune where it has been for last 2 weeks.

Maybe your fuel sender got bent during installation or something. I am still on the first tank with my 37 gallon Long Ranger tank and so far I have not experienced the gauge acting this badly. After tank install I put 3.5 gallons in to get down to the gas station And the truck said 8-miles to empty. After I filled up I have been monitoring with trip odometer and mpg. Tank seemed to stay on full for about 130 miles then hit 3/4 tank at 185 miles. 185 miles at 18.0 mpg is 10.27 gallons burned. 3/4 of a tank should be 27.75 Gallons remaining or 9.25 gallons burned. 10.27 versus 9.25 gallons is close enough for me and I am guessing half tank will be even closer since the top of the tank takes awhile for the gauge to move.
DTE is obviously off, but is it that big of a deal especially when it would never make you run out of gas. If your trip meter gets reset just go fill up if you can remember and reset if you can’t remember how much gas you had left.

 

[Rap406]

Following closely. I purchased a LR tank but it won't be in until July.

 

[ForzaFTW]

Has anyone tried this? I just saw this in another thread on the forum:

"As done on previous Fords to adjust the accuracy of your Distance To Empty (DTE) you hold the OK button down and then hit the ignition button, whether push button or turning the ignition key on. ET will pop up on the screen. Hit OK till the prompts are gone and you see the engineering screen. Scroll up once and you're at the DTE adjustment. Do the math and divide your actual hand calculated mileage with what's on the DTE. EXAMPLE 18.6÷18.9=0.9841269841 change the number on the DTE screen to 984 and hit enter. That will adjust you to true DTE. This will allow those of you with the big aftermarket tanks to calibrate. Forscan doesn't do this function."


From: https://www.ranger6g.com/forum/threads/rc-mustang-azure-gray-raptor-build.19602/page-9

 

[ExBronco]

I got a Long Ranger 140L tank from Australia via a Canadian dealer that should be delivered tomorrow. Total cost with shipping was significantly cheaper than Long Ranger America without shipping with exchange rates. biggest bonus is the tank is larger and comes with a larger vapor canister to handle the larger capacity rather than try to reuse the stock one.

how much was it ? canadian too hère looking for that

 

[03GeeTee]

Has anyone tried this? I just saw this in another thread on the forum:

"As done on previous Fords to adjust the accuracy of your Distance To Empty (DTE) you hold the OK button down and then hit the ignition button, whether push button or turning the ignition key on. ET will pop up on the screen. Hit OK till the prompts are gone and you see the engineering screen. Scroll up once and you're at the DTE adjustment. Do the math and divide your actual hand calculated mileage with what's on the DTE. EXAMPLE 18.6÷18.9=0.9841269841 change the number on the DTE screen to 984 and hit enter. That will adjust you to true DTE. This will allow those of you with the big aftermarket tanks to calibrate. Forscan doesn't do this function."


From: https://www.ranger6g.com/forum/threads/rc-mustang-azure-gray-raptor-build.19602/page-9

I'm gonna try this today! Tired of my truck telling me I'm getting 1+ mpg better than my hand calculated mileage.

 

[03GeeTee]

Was able to pull up the engineering mode and change the value from 1000 to 958 (.958 from my mpg calculations)

Hopefully that puts the estimate closer inline with my hand calculated mpg numbers, won't know if it worked or not until I go through my next tank. I should've tried to see if it would allow me to input a value greater than the 1000 stock value. I'm assuming that the guys running larger tanks would need to go up rather than down like I did?

 

[Stumpm2]

how much was it ? canadian too hère looking for that

I am in the US and with favorable exchange rates I got my tank for $2800 USD after shipping and import fees.

I just hit 310 miles on my 37-gallon tank and my gauge is reading half. Calculating gallons burned from my mpg is 17.51 gallons burned at half tank. This calculates out perfectly to 35 gallons with 2 gallons in reserve. Gauge seems to be perfectly accurate for 3/4 tank and half tank. I will update when I hit 1/4 tank, but so far I am happy with gauge tracking the tank. Who cares about miles to empty with an accurate gauge?

Maybe the fuel sender height on the Long Range America Tank was not designed correctly for the stock sending unit to read accurately? The Long Ranger Tank seems to work perfectly with gauge for the top half at least. The Australians have had this truck a lot longer than North America and these Long Range tanks seem more popular over there.

 

[midnight270]

I put a deposit on a Long Ranger 140L tank today. I ordered it from a shop in Canada and they are going to ship it to NJ once it arrives.

 

[ExBronco]

I am in the US and with favorable exchange rates I got my tank for $2800 USD after shipping and import fees.

I just hit 310 miles on my 37-gallon tank and my gauge is reading half. Calculating gallons burned from my mpg is 17.51 gallons burned at half tank. This calculates out perfectly to 35 gallons with 2 gallons in reserve. Gauge seems to be perfectly accurate for 3/4 tank and half tank. I will update when I hit 1/4 tank, but so far I am happy with gauge tracking the tank. Who cares about miles to empty with an accurate gauge?

Maybe the fuel sender height on the Long Range America Tank was not designed correctly for the stock sending unit to read accurately? The Long Ranger Tank seems to work perfectly with gauge for the top half at least. The Australians have had this truck a lot longer than North America and these Long Range tanks seem more popular over there.

As my currency feel like pesos right now (CAD), 2800 USD is crazy expensive!!! Thanks for heads up I'll follow your info! I'll get that fuel tank one day I'll pull the trigger (the day CAD are worth more)!!!

 

[ExBronco]

I put a deposit on a Long Ranger 140L tank today. I ordered it from a shop in Canada and they are going to ship it to NJ once it arrives.

oh how much was yours?

Sponsored