I was wondering if this is normal or if I should have my truck looked at. When I fuel up my fuel sensor says I am on empty for a couple days then will go to the full line. Is it possible it is getting stuck or slowly going out?

 

Weird have not read nor heard of this one.
How many miles on it?

 

Mine did that almost from new. By the end it was pretty consistently reading 1/4 too full even after it started reading up on the gauge (yes, that means at 1/4 on the gauge I was on fumes...) They changed the sending unit in the tank and that fixed it. Apparently they have had a lot of them go bad.

Duncan

 

Same thing happen to me in July with a new 2004 6.0 CC. The gauge indicated slightly less than 1/4 tank, I was stopped in traffic, then it started chuggin', the light went green then it ran, then it died. I had no audible bell or visual warning light come on. I rolled into a safe place and called the FORD road service number and he picked me up 1 hour later with a roll-back. The driver picked me up with his wife and kid and I was 30 miles away. The truck had 853 miles on it, the dealer took care of me. They gave me a truck to drive for a few days. They found that the tank sending unit was bad and stated they replaced the fuel pump since it ran dry.

The dealer is a Blue Oval dealer and I now know why. They fixed it fast and right. The audible indicator and light now works when below 1/4 tank. After knowing that lesson I try to keep at least 1/4 tank+ in it or after 375 miles unloaded (29 gal tank).

 

Mine is the other way around. I fill it up to the filler neck and I go 140 miles before it even comes off "Full". Then it drops within 40 miles to 3/4 full.

 

Hi there Tad !!! good to see you back in here !
Been on vacation from us ?
***********************8
May be a fuel sending problem...
but will ask a stupid question...
are you leaving the key on while filling up ????

that seems to freak out the fuel gauge for a few cycles until it "catches" up