Gas Gauge or Miles Left... What's Right?
#1
Driver
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Gas Gauge or Miles Left... What's Right?
2000 LS400
The gas gauge says a little under 1/4 tank, but the dash board says 14 miles left. Which is correct? Recently I borrowed this car, my wifes, and only put $25 in rather than filling it up. I think both of these used to be closer together. Which, if either, should I believe?
The gas gauge says a little under 1/4 tank, but the dash board says 14 miles left. Which is correct? Recently I borrowed this car, my wifes, and only put $25 in rather than filling it up. I think both of these used to be closer together. Which, if either, should I believe?
#2
BahHumBug
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both are technically "correct."
the "miles left" uses an algorithm based on the current tank MPG and the amount of fuel left before the fuel light turns on (so you always have a little more distance with reserve fuel, but not much). if you have high tank MPG you'll see a longer distance vs. if you have a low tank MPG.
1/4tank marks are at the roughly 4.3-4.6gal range for the 98-00.
the "miles left" uses an algorithm based on the current tank MPG and the amount of fuel left before the fuel light turns on (so you always have a little more distance with reserve fuel, but not much). if you have high tank MPG you'll see a longer distance vs. if you have a low tank MPG.
1/4tank marks are at the roughly 4.3-4.6gal range for the 98-00.
#4
Pole Position
Are you saying you burn gas quicker when you have a half tank verses a full tank? If so, keep it above half. I think the rest of us get the same amount of miles from the first 10 gallons as we do from the second 10 gallons. LOL
#5
Sorry for the bump guys but, puredrifter. How accurate is our computer's displaying the avg mpg and tank MPG? I also notice that my gas burns quicker when it gets to half tank, my gas meter drops quicker.
#6
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I have a 92 ls. On long trips I noticed from full tank to half I get about 250 or so miles all highway. Then the next 8th of the tank i get put on another 100 or so miles. It seems like I gets thebest gas mileage from half tank or less.
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#8
The more gas you have the less mileage due to weight try and pick up a 5 gallon can of gas then try two of them you will see how much weight your car has to carry so more is less mileage
#10
does your tank avg and normal avg reading drop when you start your car up and let it warm? it happens to me ... it drops when its idling before i drive it
#12
Moderator
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^ dang 27mpg! i'm happy to get 23 city. anywho the reason the upper half of the gauge gets 200+ miles vs the +100 on the lower half is because the tank is baffled on the lower half to prevent starvation of the fuel pump during cornering or braking. the top of the tank is larger in volume vs the lower half resulting in this.
i wish my 97 came with a mpg gauge. i would just use it as a reference however since all driving habits vary. i would use the trip meter as the basis of my tank range to see how much more miles i have left prior to the next fill up (assuming i fill up to a full tank and zero the trip meter).
i wish my 97 came with a mpg gauge. i would just use it as a reference however since all driving habits vary. i would use the trip meter as the basis of my tank range to see how much more miles i have left prior to the next fill up (assuming i fill up to a full tank and zero the trip meter).
#13
I would say watch the lcd, flip through the other options. I'm assuming that the lcd is going out. it should prolly say 44 miles but the first half of the fist 4 is not lighting up. As stated by xtreme26, once you get below 30 it just says low fuel. but that is not exact, your mpg is constantly changing. this just kinda gives you a guesstimate.
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