So I threw some gas in the Ex yesterday... I was just between 1/2 and 1/4 and I put in about 17 gallons. I got back in it and the gauge moved to 1/2. This morning as I drive 25 miles to work, it finally slowly crept up to just above 3/4. Anyone else have this issue?

 

If I add fuel without first switching the ignition off (let the truck run) the gauge moves up very slowly or very little. My gauge has never taken more than five or ten minutes to get accurate. If I do turn the ignition off before adding fuel the gauge is accurate as soon as I switch the ignition on. Strange that it took so long for yours. Just curious, has the gauge dropped accordingly to fuel consumption?

 

That happened on my SD one time when I turned the key on while filling up.

It must blow its mind if the key is ON and the amount of fuel is *increasing*

 

Mine does and has always done the same thing.

I always write down my mileage when filling up...if I don't get the key "off" before it hits somewhere between 1/2 and 3/4 full gallon wise...and the key is in the "ACC" position or truck is running...it takes a long time for the gauge to reach "full"...and mine "creeps" like the OP's does if it gets hung up lower than it should.

Joe.

 

I have that issue with the X and HAD that issue with my explorer. I gave it 3 separate treatments of Chevron Techron, and the issue disappeared in the explorer. I wonder if the same results can be had with the X....

Thanks for bringing this up! *adds it to his list of things to do*

 

I have had the same thing multiple times...but it always adjusts to the correct level when given time...it is annoying when trying to track mileage, as I ahve spilled diesel once or twice thinking it wasn't full...oops...

 

I've run additives many times and it makes no difference at all (on the fuel gage that is)...