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I had mine stop working over a year ago. If the tank is more than half full it will measure correctly but anytime it falls lower it stops working. Luckily anytime it is truely low the low gas warning does come on so it is a great help.
The sensor is part of the fuel pump module inside the gas tank. The signal is sent to the body computer, so it could be a faulty module or a problem with the body computer. The circuit would need to be checked with a meter.
check the ground leg to your engine.. it runs off the neg. battery terminal. will connect to frame and engine.. pull it off, wire brush it put it back.. you radio will work, 'cause it draws much less current, and is grounded in dash.
DUDE!!! Installing a new ground Worked for these symptoms ive been having for MONTHS! Dim headlights, pressing brake would shut off radio, turn signal slow and non blinking, also would shut down radio, dash lights dim and gauges FREAKING OUT!!! Process CHEAP AND EASY!
Hello graytape, was the fuel gauge and low fuel light working and then one day just stopped working?, if so, you have probably blown a fuse and you should be able to locate what fuse and where it's located in the owner's manual.
If you recently got the vehicle and then you found out that the gas gauge and low fuel light doesn't work then that is something completely different.
without knowing the year of the vehicle I can only give you an educated guess.
Many vehicles have a float in the gas tank and this float is directly linked to what you see on the gas gauge. However, after a number of years the floats get saturated from the fuel and become heavy, heavy enough to where they don't float anymore. That is one of the most common causes of the fuel gauge not working.
The sensor that activates the low fuel warning light may be independent of the fuel gauge and the fuel in the tank isn't low enough to turn it on. Your tank has to be very low to activate the low fuel warning light.