Fuel gauge not working right..

[dz4swamper]

So, my fuel gauge hasn't been working correctly ever since day two of my ownership of it. The only fix I've heard of is swapping out the in tank sender, but at $400, that's steep. Is there a DIY fix for this?

[pizza pig]

mines been acting mental as well, reads full then empty and low fuel light is on, then the CEL came on with a fuel level sensor code

[dz4swamper]

I've yet to get a code for it, but it'll read dead empty right after a fill up and trying to gauge how much fuel I have by how many miles I've driven is getting old. Haha
Plus, math isn't my string suit.. Haha

[jwsland]

same problem here, my 1/4 mark is empty.

[dz4swamper]

So no one has a DIY fix for this?

[F250SixOH]

Mine will read full or empty sometimes. I never trust it. With 6.0 injectors at stake, I just monitor my mileage and refill every 300 or so miles. I know that even working my truck hard I won't run out before then. It's either do this or pay the ungodly amount for a new sending unit.

Diagnosing the sending unit requires pulling the tank and using an ohm meter to measure the resistance as the unit goes through its travel I think.

[dz4swamper]

I was watching a video on YouTube about this issue in 7.3s and the resistance jumps around as the level sender travels.
I'm thinking it's the same issue on our trucks, and I'm curious if there's a short or broken solder that is causing it.. And if so, if there would be a cheaper DIY fix like re-doing some soldering

[sargar]

There was a thread a few weeks back about this and someone claimed using DieselKleen every tank had helped.

I have a buddy with an 05 350 that does this and he has started the DieselKleen thing.

Maybe it is cleaning up some funk on the sender??

[jwsland]

Its worth a try. Didnt work for me though, I use it every now and then.

[avorx]

I have had the same issue with our 6.0 and the fix was to add 2 bottles of chevron with techron when filling up with diesel. it is supposedly the fix that ford uses to fix wonky sending units.

its supposed to clean the crud off of the sensing unit.
I needed 2 tankfuls, but it worked for me.

frank