Fuel gauge is showing amout of fuel like backwards on gauge. vehicle has 1/2 tank of fuel but gauge is showing like in the 100mph speed gauge

most fuel gauge readings are not that accurate anyway so its out of fuel but not what the is guage reading. but the fuel level sensor in the tank may be at fault sound like its the prob but the instument pack should put the low fuel light on if its fitted on your vehicle spec but not always fitted even though the warning light is present hope this helps

You most likely need to replace the fuel level sending unit inside the fuel tank.

if you have 2 fuel gauges working of a tank switch there may be some resistance in the circuit of the second circuit that increases the reading of the gauge. Personally I have the tanks balanced out with a levelling hose between them the the gauge reads the capacity left in the tanks IE full-- both tanks-- full, 1/2 both tanks 1/2 With the way you have it set up then if one gauge is faulty and shows full when it is empty you can find yourself in a spot of bother when you need the other tank

Is this a flex fuel vehicle. If so, call the dealership and ask the parts dept. if there is a gauge module (perhaps behind the instrument cluster). This may be the culprit and needs to be replaced.

neet to be oppen meeter box & chanch the speed meeter gauge&
fuel gauge

Bring it back to dealer and them recalibrate computer and fuel gauge. Someone missed that in new car prep

sir, there are couple of problem that can cause you this
1). the position of fuel tank where it is located
2). see for any damage isn't there in the fuel tank unit
3). see for that the fuel supply pipe line isn't damage any where in between
4). now the thing you mention that you don't wanna change the part's but after thousand's of Km done by any vehicle there is need for change for parts as they worn out & can cause drop in fuel efficiency, performance, & many thing are involve it so do refer to the instruction manual provided by the manufacturer with you vehicle
5). As you mention that when vehicle reaches the quarter tank mark you seem your vehicle show out of fuel but in this case some time the thing is not the same what you see it can happen the fuel gauge may not show proper fuel level so do check for both fuel tank & as well as you meter console unit for problem.
after doing the couple of things if the problem still arises then you can consult me it am there to help you out.. OK until then see you sir...!

I had the same problem. My battery was going bad. When I replaced it with a new one, the fuel gauge worked fine.

Hello There

It's a faulty fuel sender unit. Located in the Fuel tank and measure the amout of fuel in the tank, It's a common wear and tear part replacing it will solve your problem.

Hope this helps, please don't forget to rate me.

Thanks

Sounds like you have a bad fuel gauge sending unit.