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I suggest you read the vehicle owner's handbook to be certain what the exact function of the light is. You will need to know that in order to determine whether the light is warning you or is broken.
The fuel light usually warns the fuel level in the tank is low...
You may have jarred the sender unit in the tank, got it stuck, maybe. Try rapping on the tank a bit and see if it causes the gauge to move. Otherwise you may need to take the sender unit out of the tank for inspection.
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.
It sounds like the fuel level sensor is getting stuck at the "full" position. This sensor is located in the fuel tank and you or a mechanic will need to drain the tank, drop the tank, and replace the sensor. If you typically keep your tank at full it may be a good idea to use up most of your fuel before refilling. This will allow the sensor to get some "exercise" instead of always staying at or near the "full" position. This should help, if not, come back to FixYa for more help.
The level sensor is bad. They are easy to do. You don't have to pull the fuel tank down. There is an acsess hole in the trunk. Look in the rear of the trunk at the rear of the seats. You will notice there is a spot in the middle that the capet comes together, Pull them apart and there is metal plate with some 10mm nuts, pull that off and your fuel pump is there, remove and replace the sensor.
Also there will the a code in the pcm. you will need to clear it to pass emissions
You've got to check the( Fuel-gauge) sender unit which is inside the tank,
it could be faulty or stuck at 'full' position.
Its mostly fitted on top of the fuel tank could be easily accessable form the inside or you may have to drop the tank.
The gas guage is a seprate problem, the gas fill hose may have a sharp ben in the hose or kink, the gas pump hase a shut off valve that shuts off the pump if gas does not flow freely ie:blockage or full tank, I would visualy inspect the filler hose from the gas cap to the tank for again sharp bends or kinks, if the filler hose is in anyway restricked the pump may asume the tank is full.
the gas guage: is usualy a simple flot on a rod in the tank (like a toilet tank has) instead of opening or closing a valve it operates a "potentiometer" veriable position sensor (kind of like a dimmer switch).
if the float gets stuck the guage will stay in that position, the guage gets the signal via the wire harnes, so check the electric circit.
A trick I used on one of my jeeps (I removed the guages ) I filled the tank, reset the trip odometer to zero, put a jeerycan and a couple gallons of gas in the jeep, then drove normaly a week or so till I ran out of gas. wrote down the mileage on the trip odometer. gerrycan gas got me to the gas station.
divided the mileage by half. I fill up the tank all the way the reset the trip odometer to zero, when I reach the half mileage of the tank I fill up again and repeat
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