Fuel Gauge on Buick Park Avenue

Average mileage: 147,000 (106,000–202,000)
2 model years affected: 1999, 2000
5 people reported this problem
4 people shared problem details
When replacing the battery I accidently touched my wrench from the positive terminal to bare metal which caused my fuel gauge needle to go completely around to the stop pin. Had to use the trip mileage for the last 5 years to gage when to fill the tank. Found out on this site that a magnet placed against the plastic directly in front of the needle and rotating it counterclockwise would put the needle back in position. Did this and now works fine. Should have searched this site long ago.
I bougjt this car second hand , so the gauge had always been inaccurate. It fip flops back and forth. I actually have to count tbe gallins i put in and use to dtermine how much i have inside my tank.
Haven't fixed it, but looking around for a answer. My needle jumps randomly and will not show me how much is in the tank. If i have more than a half a tank of gas it won't go lower than the top of empty while jumping around.
It look as if one of the relays stuck killing the power from a brand new battery. Supplier replaced new battery with new. Was unable to locate problem but suggest a relay stuck causing this problem. Gauge became bad. Used hd magnet to move to sensor in needle. Works fine again, second time with problem
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