[mbnv992]

Hi everyone !
On our new 2005 STS V6 1SC (my 2007 V8 1SE also had this exact some issue), when you go to put gas in the car (say the gauge is reading near Empty, and you put $10.00 of gas in (now-a days about 3 gallons or so), the needle jumps up to 1/2 full, which it is clearly NOT half full. Then, you'd ride around for about 20 miles or so, shut the car off. Only to later turn it back on, and the gauge reads almost empty again ???
My 2007 STS V8 did the SAME thing with the stupid gas gauge. So, in other words, it reads more than what's actually IN the tank, untill you drive it around for a bit, and let it "settle", then the needle will plunge to where it "actually" is.

Is there a solution for this problem ? After owning two STS's and the issue is with both of them, makes me wonder how many of YOU guys have this issue as well ? All my other vehicles, you put gas in (be it $10, $20, etc.) and the needle will go to exactly what you pumped in the car (and I'm NOT on any hills inclines/declines when doing this ether).

Any thoughts will be great !

Mike

 

[ECha3]

I always fill it. Almost all cars' gauges are not linear. Half is about a third. If it's worse than that, get it fixed.

 

[dkozloski]

The STS gas tank is a saddle tank that straddles the driveshaft. When you fill it partially, all the gas is in the side with the gauge. After you drive for a while the fuel pump and sloshing distributes the gas from the side with the gauge to the side without gauging and it now indicates what's really in the tank.

 

[mbnv992]

Ahhh, ok I guess that explains it then !

Thanks for the help !

 

[stsscott]

What Driveshaft???

 

[Ludacrisvp]

What Driveshaft???

Hoping this is a joke, but yes the STS has a driveshaft ...

 

[B1n2fra]

Yes I've noticed that when the car reaches half the rest of the way it just falls like a rock. I just fill up when it reaches half tank. I consider half to be empty. The gas needle fooled me when I first got the car but not again.

 

[ECha3]

My warning goes off and I get gas, ASAP. There's not much more than 1 gallon left. My wife's car has a bit more, but not 2 gallons!

 

[curtc]

My warning goes off and I get gas, ASAP. There's not much more than 1 gallon left. My wife's car has a bit more, but not 2 gallons!

Same, mine went off the other day, put in 16.8g...Wasn't much left in there...