My Gas Gage Stays At Full

1997 Mercury Grand Marquis Fuel Sender - available at amazon

Faulty Fuel Sender: The most common cause of a gas gauge that stays at full is a faulty fuel sender. The fuel sender is a component in the fuel tank that measures the amount of fuel and sends a signal to the gauge on the dashboard. If the fuel sender is faulty, it may send a signal indicating that the tank is always full, even if it's not.

1997 Mercury Grand Marquis Fuel Sender - available at amazon

Wiring Issues: There may be an issue with the wiring between the fuel sender and the gauge on the dashboard. If there is a break in the wiring or a loose connection, the gauge may not be able to receive the correct signal from the fuel sender.

Faulty Gauge: It's also possible that the gas gauge on the dashboard is faulty and not able to accurately display the fuel level.

To diagnose the issue, you may need to take the car to a mechanic or auto shop that can test the fuel sender, wiring, and gauge to determine the cause of the problem. Depending on the issue, they may be able to repair or replace the faulty component to resolve the issue with the gas gauge staying at full.

1997 Mercury Grand Marquis Fuel Sender - available at amazon