fuel level problem

[trublew]

after a trip up the mountains, i noticed my fuel level didnt move much. im now 150 miles on this tank, and it still fluctuates between 3/4 and full... i know its not the fuel gauge because i put the old gauge cluster in just to check and it did the same thing... what can i check from here?

 

[chauncey0337]

Could be sending unit going bad.

 

[gdddup]

Could be sending unit going bad.

x2

 

[trublew]

I kinda figured that, is there any way to check it other than dropping the tank? its about 20 degrees outside right now, so i really cant be playing outside on the truck right now

 

[DefendHawaii]

Mine stays on below empty if I fill it up to top then after about 40-50 miles it moves to full then is fine.

 

[Gzes]

i got mine replaced n it still is kina awkward but yea not like before floater and fuel pump....

 

[Pooh Bear]

There are lots of complaints about sporadic movement of the fuel guage. Supposedly the contact on the sending unit get a carbon build up or something like that. I heard Techron additive is good for this, but it didn't work for me. I kinda got used to it.

 

[trublew]

replaced the pump and sending unit, figured since im undercoating the truck itd be good to do above the fuel tank too... so, now were better, guess it was a faulty sending unit