The problem is most likely the sending unit, not the gauge itself. The sending unit would have to be replaced.
The floater inside your pump is sticking. You will have to replace your fuel pump in order to fix this problem.
Check out the wire going to the tank. If ok, the float may have sunk. If the wiring to the sending unit is ok the float probably has a hole in it if the truck sat for a long time the float may have rusted...
fuel gauge on my 99 buick centry custom stays at full , then drops to empty. Is there a fuse or relay that i can have my neighbor look at it
Your check gauge light comes on if : your coolant temperature guage shows the temperature is high your oil pressure gauge shows the oil pressure is low or your fuel gauge shows the fuel tank is near empty
Fuel tank sending unit. Fuse.
You need to check the power and ground at the fuel tank. If that is okay the float is most likely bad.
mine stays just a quarter inch below midway all the time at normal temp
You should be able to have access to the gauge from under the car and in the front of the tank. It would be good to have a new rubber seal on hand. Check the wiring first, sounds like the gauge is grounding out. Do this on an empty tank of course.
Thermostat is sticking.
The gauge, wiring or sending unit is bad.
i have a 1990 ford ranger and my fule gauge always reads full, why?
fuel sending unit in the fuel tank..... cost alot of $ and you have to cut the exhaust...... just keep it full and drive that mf'er