Fuel guage drops to empty then back up, wont take gas in tank

Check that there are no holes in the float. If the fuel is getting into the float, it will give a false reading. Another thing is to check the ground on the float sensor. If it's not connected tightly, it will create a false reading too.

If you can't put much fuel in i's probably not empty! If there is not a big puddle of fuel underneath then your guage is broken.

You can take out the part of the dash where the guages are and change the little sensor/fuse behind the fuel guage, they should have a replacement part at orileys or autozone

A loose connection on the sending unit could cause the problem but also moisture in the tank in cold weather could also be a factor in which i would add fuel line antifreeze to a full tank of fuel..........Hope this helps you out.

I do not think you have any dents in your tank, nor do I think its empty when the guage indicates that it is.

It is more then likely a fuel level sending unit which is located inside of the tank. They are not fun to replace, empty the gas, drop the tank, and then replace the sensor.

Fuel pump and the sensor that detects the gas level are both inside the gas tank.

Your sending unit inside of the fuel tank is probably faulty. Unfortunately you have to drop the tank to change it.

The oxygen sensor has nothing to do with the fuel gauge. There are two possibilities for the gas gauge error, first it could be the in-tank gas level sensor or it could be a defective stepper motor which drives the gauge. A professional scan tool can determine the fuel level being sent by the in-tank sensor, if that disagrees with the gauge, then the stepper motor needs replacing.

sounds like eather fuel pump or crank sensor

open circuit in the fuel level sensor. mounted in tank. as the fuel level in the tank starts to drop the arm will move past the dead spot on the sensor and the gauge will start reading again.i dont recommend diy replacement of the fuel level sender.