More than likely the sending unit inside the fuel tank is bad. The fuel tank must be removed to gain access to the sending unit.
Engine is overheating, faulty gauge, faulty temp sensor......
If the guage is registering full all or when under half a tank it is a faulty sending unit. Cost is in the hu8ndred to repair.
To repair the fuel gauge on a 1997 Pontiac Sunfire, start by checking the fuse related to the fuel gauge in the fuse box. If the fuse is intact, inspect the wiring and connections at the fuel tank sending unit for any damage or corrosion. You may need to replace the sending unit if it's faulty, which involves accessing the fuel tank. Finally, ensure that the gauge itself is functioning properly; if not, consider replacing the gauge cluster.
First, look for an air conditioner repair person. Or call Chevrolet Company for advice.
Ground the temperature sending unit and the gauge should go to hot. If it does not the the gauge is defective. The instrument cluster will have to be sent off for repair. had the same problem, check for bad fuse located in fuse box under the hood on drivers side.
More likely the temp sensor has gone bad than the gauge is actually bad.
The temp sending unit on the engine could be unplugged or faulty.
If the fuel gauge in your 1997 Hyundai Excel isn't working, it could be due to a faulty fuel sending unit, a broken wiring connection, or a malfunctioning gauge itself. First, check the fuses related to the fuel system for any issues. If the fuses are intact, inspect the wiring and connections at the fuel tank and the instrument cluster. If all else fails, consider consulting a mechanic to diagnose and repair the problem.
$600 for a new pump, sending unit and labor
To repair the fuel gauge on a 1997 Mitsubishi Lancer, first, check the fuel sending unit located in the fuel tank for any faults, as it often causes gauge issues. Ensure the wiring connections are secure and free of corrosion. If the sending unit is defective, it may need to be replaced. Finally, test the gauge itself by connecting it to a power source to ensure it functions correctly; if it doesn’t, you may need to replace the gauge.
It all depends on what is wrong with it. Give us more info.
The temp sending unit may be shorted to ground. Unplug the sending unit to see if the gauge drops to cold. If it does, you have a faulty temp sending unit.