Gas gauge says full

Hi yoll

My 1992 Ford escort is having a problem in which the gas gauge always reads full. I was wondering if any of you could tell me what the problem is and the best way to attempt to fix it.
I was also having a problem where the feul cutoff light is always ona nd wont shut off even though there is no feul cutoff.I tryed pressing the feul switch in the trunk but its not working do you guys have any ideas.

Thanks for your help

Your fuel pump sending unit would be the first place I'd go

The fuel switch in your trunk IS your fuel cutoff. If there is a problem with that switch it just may be why you are getting the light to come on.

Its kinda strange because when i shut off the feul cutoff light the car wont work. So really it only works when the light is on.

how do you shutoff the light???

you can shut off the light by pressing the button in the trunk but when i do that my car wont start again so i have to leave it blinking to get it going.

Are you sure the light isn't plugged in backwards? or any plug plugged in backwards? that's what it sounds like to me...

i'll try that thanks, and i think i got gauge problem under control i replaced the sending unit.

Ya its back i replaced the feul pump sending unit but the problem didn't fix itself. And the plugs aren't plugged in backwards so got any new ideas anybody?

wait, i just caught somethin...you say that when you push the button 'down', the light goes off and the car wont start? cuz I thought when the button is down, that means it feeds current to the pump, and when you pop it up with a flat head screwdriver or knife, that cuts power to the fuel pump.....

i mean when i pull the button up the car wont start and the light goes off, sorry about that. And when the button is down light comes on and the car is able to run. Sorry for mix up.

man, u got me stumped...I'd jus keep starin at wires all day...dont know what to tell ya man.