I have had a couple Monte Carlo's and they has fuel level issues as well (usually the sending unit goes bad). The only guarantee way to fix it usually consists of draining the tank, unbolting the tank straps, and carefully dropping the tank. A few jack stands, a jack and help from a friend will make it much easier. Get a flat head screw driver before you do all this to tap the lock ring on the top of the tank in order to release the sendiing unit. Then diconnect it and pop it out. They usually cost anywhere 30-60$ depending on where you get it.
The gauge, wiring or sending unit is bad.
how do you fix a gas guage on a 1989 ford aerostar
Then fix it
Have you checked the gas floater in the gas tank?
cause its a pice of s honda
The fuel sensor is in the gas tank and probably needs replaced, the tank will have to come out to fix it.
Could be bad gauge or float stuck in fuel tank
Its probably the float in the gas tank that tells how much fuel is left in the tank... its sticking.
Most fuel gauge problems are the result of a faulty fuel gauge sending unit located in the fuel tank.
sending unit
You fill the car with gas, you use up all the gas, then you fill it up again!
You can't. EPA and the government requires a gas tank to be replaced if it is leaking or cracked.