Slow fuel gauge

[WEWILLE]

I havnt had time to look at this yet, but yesterday i filled my truck up with fuel and the gauge did not go up to full. But as i drove it the gauge would slowly go up. I'm just wondering if anybody has had this problem before, i start to look at it, and take it in for warranty if i have to.

[SMKSTAX]

I noticed this happens when I fill my truck up while it's running but not when I shut it off then fill up.

[SMKSTAX]

On my 04 not my 97.

[Blue01F250]

you have to turn your truck off for it to reset... otherwise it takes it a while to reach full... not sure why - just know my 97 f150 and my 01 f250 both would take forever t reach the full mark if the truck wasn't shut down when filling up.

[WEWILLE]

Yeah i was just reading about that, a while a go there was a poll about if you shut it off while refueling or just let it run, some people had problems leaving it run and some didn't. But i always shut it off while refueling. It has never done it before. Thanks for the quick responces.

[Blue01F250]

No problem - I couldn't begin to tell you WHY - I can only tell you that those two Ford's I've owned have done that...

Plus if you have the trip computer - doesn't it mess that up on "distance to empty" b/c it doesn't reset?? I can't remember - will check the next time I fill up.

[WEWILLE]

I'm not sure either, but it wouldnt surprise me because of all the computers on board.

[DoubleDpsd]

Originally Posted by WEWILLE

I havnt had time to look at this yet, but yesterday i filled my truck up with fuel and the gauge did not go up to full. But as i drove it the gauge would slowly go up. I'm just wondering if anybody has had this problem before, i start to look at it, and take it in for warranty if i have to.

I've had this problem often before my first sending unit. Had it replaced and no issues. After marc flashed my truck the same thing started to happen. He said to use some chevron additive and hope that free'd things up. well I saved the $15 and hoped for the best and it works fine now. maybe try some of that additive?

[Freezo]

I have an 05 F250 and I have the same problems. I shut off my truck to fuel it and it takes a few days for it to go to full. Also sometimes when it gets down to around 1/4 tank it will go crazy and drop below empty then pop back up to 1/4 tank. The dealer said to try some Techron additive to see if it cleans up the sensor. So far that has not worked. They said it's very expensive to drop the tank and replace the fuel level sensor. Why can't FORD make a reliable fuel gauge? Recently a couple of codes were pulled out of the computer...p0460 (Fuel level sensor open or short), p0463 (fuel level sensor high input).