1990 t bird fuel gage not working

when i turn the tbird on the gage goes down and i just put 20.00 in it it should got up but it wont go up what would the problem be when i turn it on
it does move but goes down when i turn it off it goes to the top of the e mark any answers?
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jay25 wrote:

Jay, some punctuation and caps would help. From what I gather it sounds like your fuel sender is open (bad). It's in the fuel tank, be very careful replacing it. You must remove the fuel tank to replace the fuel sender.
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