Fuel Gauge Reading wrong
Thread Starter
|
1st Gear
Joined: Sep 2024
Posts: 1
Likes: 0
Fuel Gauge Reading wrong
I just put a large capacity (68 Gallon) fuel tank on my 2025 F350 Dully. When i say I, actually I mean I paid the Ford dealership in Gilbert Arizona to do it. The issue is that I think the calibration is off and each time I take it to Ford they say oh, no it is ok, you just need to drive it for a while. Well i have over 1400 miles on it and it still reads low. Actually recently i took it isn for a recall (cluster software update) and they said that was probably causing my issue, the dealership probably reset the tank to a 36 gallon tank, and this made send because a 36 gallon tank would read approximately 576-612 miles to empty when full and my average MPG was between 16 and 17, so i brought it back in and they said it was ok, that the tank capacity was still showing set to a 68 gallon tank, which i find strange as a 68 gallon tank for a truck averaging 16 miles per gallon should be showing should show 1088 mile to empty rather than 611. Actually averaging 17 miles per gallon on a 36 gallon tank would equal 612 mile per gallon, so is this coincidence or is the cahnge to tank capacity not taking affect?
Here is the issue: It is a 68 gallon tank, they say they updated the software to indicate it is a 68 gallon tank and the software does the rest, but when I drive the truck and I am getting an average of 15-17 miles per gallon, and the miles to empty say 75, I stop to refill the tank and I assume I will be putting in about 60 gallons. But 1) when I fill up the tank and after getting 25 gallons in the tank the fuel gauge reads FULL and 611 miles to empty, then 2) the tank takes an additional 26 gallons before the fuel shut off kicks in, indicating there was about 16-17 gallons left in the tank and should have read between 240-272 miles to empty when it read 75 miles to empty.
I had a large capacity tank on my previous SRW F350 and it reacted as you would expect, as soon as average MPG changed the estimate miles to empty updated, just not on this new truck with the new tank. This makes it very nerve racking not knowing and not having confidence on long trips to know i can trust my instruments.
Hs anyone seen this before and does anyone have any ideas what is wrong and what I can do to get the corrected?
Here is the issue: It is a 68 gallon tank, they say they updated the software to indicate it is a 68 gallon tank and the software does the rest, but when I drive the truck and I am getting an average of 15-17 miles per gallon, and the miles to empty say 75, I stop to refill the tank and I assume I will be putting in about 60 gallons. But 1) when I fill up the tank and after getting 25 gallons in the tank the fuel gauge reads FULL and 611 miles to empty, then 2) the tank takes an additional 26 gallons before the fuel shut off kicks in, indicating there was about 16-17 gallons left in the tank and should have read between 240-272 miles to empty when it read 75 miles to empty.
I had a large capacity tank on my previous SRW F350 and it reacted as you would expect, as soon as average MPG changed the estimate miles to empty updated, just not on this new truck with the new tank. This makes it very nerve racking not knowing and not having confidence on long trips to know i can trust my instruments.
Hs anyone seen this before and does anyone have any ideas what is wrong and what I can do to get the corrected?
Mountain Pass
Joined: Oct 2017
Posts: 225
Likes: 40
From: NY
capacity
As of now the 2023 and up are not able to be done. you can change the capacity with forscan or Fords software but the distance to empty is incorrect. S&b has a DTE module coming out to correct this and hopefully the software becomes available
Laughing Gas
Joined: Sep 2017
Posts: 900
Likes: 330
Use your trip odometer until an update or module is ready. Aim for 60 gallons and 15 mpg. Using your numbers, when your odometer gets to 900 miles, start looking for fuel. You'll still have a nice buffer, plus you can adjust with your mpg accordingly.
Cargo Master
Joined: Apr 2018
Posts: 2,413
Likes: 1,124
I just put a large capacity (68 Gallon) fuel tank on my 2025 F350 Dully. When i say I, actually I mean I paid the Ford dealership in Gilbert Arizona to do it. The issue is that I think the calibration is off and each time I take it to Ford they say oh, no it is ok, you just need to drive it for a while. Well i have over 1400 miles on it and it still reads low. Actually recently i took it isn for a recall (cluster software update) and they said that was probably causing my issue, the dealership probably reset the tank to a 36 gallon tank, and this made send because a 36 gallon tank would read approximately 576-612 miles to empty when full and my average MPG was between 16 and 17, so i brought it back in and they said it was ok, that the tank capacity was still showing set to a 68 gallon tank, which i find strange as a 68 gallon tank for a truck averaging 16 miles per gallon should be showing should show 1088 mile to empty rather than 611. Actually averaging 17 miles per gallon on a 36 gallon tank would equal 612 mile per gallon, so is this coincidence or is the cahnge to tank capacity not taking affect?
Here is the issue: It is a 68 gallon tank, they say they updated the software to indicate it is a 68 gallon tank and the software does the rest, but when I drive the truck and I am getting an average of 15-17 miles per gallon, and the miles to empty say 75, I stop to refill the tank and I assume I will be putting in about 60 gallons. But 1) when I fill up the tank and after getting 25 gallons in the tank the fuel gauge reads FULL and 611 miles to empty, then 2) the tank takes an additional 26 gallons before the fuel shut off kicks in, indicating there was about 16-17 gallons left in the tank and should have read between 240-272 miles to empty when it read 75 miles to empty.
I had a large capacity tank on my previous SRW F350 and it reacted as you would expect, as soon as average MPG changed the estimate miles to empty updated, just not on this new truck with the new tank. This makes it very nerve racking not knowing and not having confidence on long trips to know i can trust my instruments.
Hs anyone seen this before and does anyone have any ideas what is wrong and what I can do to get the corrected?
Here is the issue: It is a 68 gallon tank, they say they updated the software to indicate it is a 68 gallon tank and the software does the rest, but when I drive the truck and I am getting an average of 15-17 miles per gallon, and the miles to empty say 75, I stop to refill the tank and I assume I will be putting in about 60 gallons. But 1) when I fill up the tank and after getting 25 gallons in the tank the fuel gauge reads FULL and 611 miles to empty, then 2) the tank takes an additional 26 gallons before the fuel shut off kicks in, indicating there was about 16-17 gallons left in the tank and should have read between 240-272 miles to empty when it read 75 miles to empty.
I had a large capacity tank on my previous SRW F350 and it reacted as you would expect, as soon as average MPG changed the estimate miles to empty updated, just not on this new truck with the new tank. This makes it very nerve racking not knowing and not having confidence on long trips to know i can trust my instruments.
Hs anyone seen this before and does anyone have any ideas what is wrong and what I can do to get the corrected?
I was just thinking/looking this morning.
Cargo Master
Joined: Apr 2018
Posts: 2,413
Likes: 1,124
If they're able to install factory settings, 34, 40, 48 or 66, I would ask for 66.
Trending Topics
Laughing Gas
Joined: Nov 2021
Posts: 887
Likes: 370
I like that option too. It's like having a 2 gallon reserve tank. ;-)
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
Top 10 Fords at 2026 Carlisle Ford Nationals
Joe Kucinski
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
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
Thread
Thread Starter
Forum
Replies
Last Post
wildstang
1994.5 - 1997 7.3L Power Stroke Diesel
9
Aug 20, 2008 11:30 AM