My fuel gauge stays on full all the time what cause that?

Andre Anglade

Asked by Feb 08, 2014 at 11:43 AM about the 2001 Buick Century Custom

Question type: Maintenance & Repair

2 Answers


Bad fuel sending unit. It is located on the fuel pump in the gas tank.

1 out of 1 people think this is helpful.

It may be the sending unit. . my 2000 buick regal LS has the same problem when the tank gets down lower on fuel the gauge starts to go down but 2/3 to 3/4 tank it stays on full. I replaced the fuel pump and sending unit. but same problem. I returned the whole fuel pump and sending unit and still the same problem. I recall welding the exhaust and forgetting to remove the battery terminal. the gauge was ok till I refueled the car and then the gauge stayed on fuell until the tank gets less then half way and it started coming off the full mark. to this day I haven`t been able to figure it out.

1 out of 1 people think this is helpful.

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