just like the title says my gauge drops to zero after 3/4th of a tank

 

Bad sender in the tank. I had one that went to 0 below like 1/2 a tank.

 

mine does the same,half a tank and your on e...think its pretty typical for these cars...mines a 83 gsl...more than likely sending unit wich is a pain to remove,got to pretty much drop the tank,or at least the sending unit side..

 

My s5 fc does the same, I thought maybe because its very low it would mess with the level sender but it sounds like its a common thing.

 

any common fixes?
mines doesnt drop to 0 but it takes a while to get to the proper level.
my full tank sits at 3/4 for a while before it gets to "full"