I know I've seen this thread many times before about the fuel gague staying at E all the time and I can't find it, so here's my questions. What sensor controls this guage is it a fuel sensor or O2 sensor?

Second question does anyone have any type of diagrams on how to put it in a 91 vert?

 

I found the thread about how to trouble shoot the fuel gauge, but I'm still not sure about the gague. If i fill it up the gauge goes all the way up the at about half way it starts to drop really fast. Im going to get my car back today and so I'm going to pull out the cluster and check behind it.

Still could there still be a problem with the sensors?

 

Bad or out of adjustment fuel level sender in the fuel tank.

Or

Loose or corroded screws on the back of the gauge cluster.

 

Thank you. Sorry about and waste of a thread....I finally found the previous ones.