Dodgy or faulty fuel gauges

[Guest]

Mine normally hits E with ~15L litres left and gets a solid light with ~10L left as suggested.

One time however I ran out of fuel with no fuel light, 2 notches from empty haha

Sent from the fires of Mt Doom

 

[Kaldek]

Wow, glad I found this thread. Driving around in my Legnum today and the gauge was all over the place. First I was like "Awww, no way, it's THAT thirsty?", then it would shoot back up.
It sat on half a tank for ages, making me feel like a god, and then dropped like a stone to the 1/4 mark, so I was all "awwww" again. Then it went back up!

The car has an aftermarket Walbro fitted. I suppose the previous owner didn't fit the sensor back appropriately.

 

[Lasiorhinus]

If it is indicating an increase in fuel quantity like that, as in "shooting back up", there is a problem with the sensing unit.

And this thread has reminded me that I never did in fact get the calibrated fuel card drawn up. And I filled the tank, today! So I shall remind myself to let this tank run out and then calibrate the gauge accurately.

 

[Kaldek]

If it is indicating an increase in fuel quantity like that, as in "shooting back up", there is a problem with the sensing unit

Well I wouldn't say it was "shooting" back up, but it did drop and come back a couple times. I figured it might have been due to braking and the fuel sloshing around.

 

[Lasiorhinus]

How much did it actually rise? Fuel sloshing around in the tank is unlikely to move it more than a millimetre or so. If it rose enough to visibly see it, I still think the issue lies with the sensing unit.

 

[trotty]

A 4-5 second medium hard corner and mine can move quite a bit. Even in say a hard take off upto 100 km is enough to move it 2 bars

 

[Kaldek]

Fair call. Guess I'll keep an eye on it.

 

[BFun]

I'm usually parked on a slope so the passenger side of the car is lower than the driver's side. This makes the gauge sit a little higher and it always makes me sad when I drive off in the morning and it slowly drops down 1 - 2 bars to it's correct spot

 

[mookers]

My fuel gauge moves according to the time of day and the ambient temperature