The issue is most likely the sending unit in the tank, nowadays they are attached to the fule pump assembly, look there first, the gauge itself being the issue is a lot more rare.
how do you fix a gas guage on a 1989 ford aerostar
gas guage.
Take out the sending unit in the tank to see if the lever is sticking, move it and see if the guage responds. If not the guage probably needs replacing
yes it does in fact it burns alot of it so when you guage is almost on low turn the air off and drive slow it runs out less gas. if you drive fast it will burn alot of gas to.
The fuel guage on most vehicles moves based on a positive or negative ohm signal from the Fuel Sending Unit on the fuel pump assembly. The guage HAS to correspond with the sending unit, or else the guage will read backwards (ie: reading a full tank of gas when your actually on fumes)
I believe that is the sending unit for your gas guage
problem is either in the guage cluster or the fuel sending unit inside the gas tank either one must be replaced most likely the tank sending unit take to a mechanic for proper diagnosal
fix my car
go to an auto wrecker and try swapping the guage to eliminate that as faulty, if the guage still does not work, then you will need to drop the gas tank and replace the fuel sending unit located on top of the gas tank.
If the guage itself is broken it will have to be replaced, possibly part of the dash cluster. Might be easier to install an aftermarket guage in the dash and don't worry about the original guage. Aftermarket guages are better as they actually give you a temperature number instead of a "normal" area on the guage and you have to guess what it actually is.
i dont speak car!
Wandering fuel gauge on a 2003 regal