Instead of tearing things up in the car, check the sending unit in the tank first. See if you can find a connector without taking the tank down. When you are sure you have the sending unit wire(s), a grounded signal wire usually pegs the gauge, a broken wire reads empty. Remember to turn the ignition on to read the gauge. If you can make the gauge do both, it is the sending unit or wires towards it. Be careful with wire ID if you have an electric fuel pump. If you need to replace the sending unit, take your time and watch what you're doing when getting the O seal apart, or you'll have a leaky tank to take back out.
why doesn't my rpm gauge and temp gauge, fuel gauge not work
Yes, key on, engine off, the fuel gauge should work.
why does the fuel gage on 2005 mustang don't work?
THE FUEL PUMP FLOAT HAS GONE BAD OR THE GAUGE NEEDS TO BE CHECKED
Several things can cause the gas gauge to not work. Check the fuel gauge fuse, the wiring, the gauge, and the fuel sending unit to find the problem.
fuel gauge quit working on 1997 buick park ave. what is it?
The fuel tank pressure sensor is for the EVAP system. It has nothing to do with the fuel gauge sending unit.
why wont 82 Chevy van fuel guage work
Bad sending unit in the fuel tank.
No, two separate circuits.
signal from the sensor inside the tank to the gauge