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Q: sudenly fuel pump not working and fuel gage peged over full on 1991 Pontiac Firebird

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car ran great yesterday but today fuel pump not working and fuel gage over full
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
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fuel pump and semley unit ck fuel pump relay you can take tank off but if you roll up carpet use diegrinder cut a hole in hump but make shore you dont cut but thur inside panel because it will cut hole in tank(in center of hump in flat area cut 1ft square just cut 3 side across the back and front to rear ) i used air sheres then silocone around where cut save alot of time be very careful
this is my car,found the problem. ground wire coming from tank,thru car, behind back seat,going up next to driver seat,pulled up edge of rug, by front seat bolt,bydoor,was rusted and broke off. changed end,works great now. it is the ground for fuel gage and fuel pump.
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