With full tank the dasboard gauge only shows 3/4 tank and while driving the needle oscillates a lot. 4 days ago I filled it up again, shows 3/4 tank, used the car about 10 minutes and the needle went to the Empty position and since that happened the fuel gauge it's not working anymore. it's possible to take the fuel sender out from the tank and get it fixed ? Thank you.

I give you free advice, fill up drive 250km and fill up saving money and hassle. Works perfectly.

If you cannot fill the tank because of an erroneous reading then it is time to replace the gas gauge sending unit responsible for the anomaly. Hope fully you can do it from the trunk - otherwise you will have to drop the gas tank to gain access.

Hi Josh:
I'd start by completely filling the fuel tank.
Since you know how far you usually can go on a full tank, when you have gone about alf that distance, the gauge should show about half a tank, and when you've gone just over 3/4 of that distance, the gauge should be starting to show on the low side.
At least, if you know that the gauge is not reading correctly, you won't run out of gas if you keep track of the distance and always fill the tank completely.
Hope this helps.

Gas as in gasoline or gas as in LPG gas? If its petrol, the fuel sender may be out of adjustment. (Usually means a new sender) If its LPG, the fuel stations are set to automatically shut off at 80% full. The gas tank will never actually be full to the brim but the gauge should be showing full if the gas nozzle keeps shutting off. Have a look on the LPG tank itself, they have a little gauge on them which shows how full it is. I have 2 tanks on my car , when "full" or when the pump shuts down, the tank gauges show just under full but the gauge on the cars dash shows full (2005 BA Ford)

On just about every vehicle I have ever seen, the fuel gauge will move faster from 1/2 to 1/4 (I never let a tank run past 1/4. Bad for the fuel pump) than from full to 3/4 or 3/4 to 1/2.
Do a mileage check. Fill the tank until the pump stops, reset your trip or note your odometer miles. Dive a few days or a number of miles. Fill the tank again until the pump stops and not the amont it took to fill. Note the number of miles you put on and do the math.

hi its either the fuel gauge playing up in the dash up or the fuel sender on the fuel pump in the tank

have the fuel sender unit checke( ground or loose wires) / replaced

It sounds like the wiring harness that the fuel pump assembly plugs into. Check to see it there is a replacement one available.

It sounds like the fuel sender is bad in the fuel tank.

cost more to repair than whats worth ,gauge works ok?? then leave well alone