every time i have my key on my fuel gauge reads empty but once i start the truck it goes down passed empty and the fuel light comes on i put 80 dollars worth the fuel in it and it still does the same thing i was tacking a bumper together on the truck with the battery still hooked up i was thinking that i might of fried something but it worked afterward then the next day it started acting up can someone give me some pointers to were i should start looking for my problem

 

can you complete your profile or post some info on your truck ?