Anyone else notice their gas gauge is really off? I can be on the last empty mark and when I fill it up only get 16-17 gallons in the tank. The computer reflects that I am almost out of gas as well.

Just curious......
Scott

I agree. Anyone want to volunteer to see how low the gauge goes ;)?...

Anyone else notice their gas gauge is really off? I can be on the last empty mark and when I fill it up only get 16-17 gallons in the tank. The computer reflects that I am almost out of gas as well.

Just curious......
Scott

Mine's exactly the opposite...I am around the 1/4 mark and I get 16-17 gallons in the tank. It goes past the F when I fill it up, but seems to stay away from the E when it's running low. Luckily, the computer is more accurate...

I drove ~ 18 miles with the distance to empty on 0. When I filled up it took 18.9 gallons. The tank is supposed to be 20 correct? My guess is all tanks are not exactly the same and that 20 number is probably rounded up or down.

When my computer shows 0-10 miles to empty I can put 17g in the tank...so, I agree, it's not even close.

Sacarmic or anyone else on the fuel gauge accuracy?

"Anyone else notice their gas gauge is really off? I can be on the last empty mark and when I fill it up only get 16-17 gallons in the tank. The computer reflects that I am almost out of gas as well."

My '07 does the exact same thing, computer says empty & can only get 16 gallons in.
Bill

They must really not want us to run out.:rolleyes:

Without looking, I thought the capacity was 19 and when I'm supposedly at a couple miles from empty I can usually put in 17. Makes sense I guess? In case you are really driving it like you stole it, at empty you would have about 20 miles to go. Careful if you take this bad boy on a long road trip!!!

FWIW, i've driven around with the needle well below E (and the computer estimating 0 miles left) and when I filled up I did a rough calculation of the gallons and I figure the true location of E is at least 1/16th tank but no more than 1/8th tank below the E mark.
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Isn't there something called " reserve " ?? Maybe the tank's capacity (20g) includes this reserve part... or maybe it was preset that way from the factory ??

yep mine is the same way. The computer says 3-4 miles left before the light comes on. I get scared and can only get 17 gallons on the fillup. Has anyobe run out yet? Probably not a good idea!

2 days ago my computer showed 0 miles left and i was about 1 mile away from the next exit so i took it easy and got to the gastation and it filled up a tad over 17 gallons. i thought our manual said we're a tad over 20 gallon capacity?? 3 gallons differance should be appeox 35 to 40 miles worth.. i think that's too many miles to be "safe" on

damn, all along ive thought the fuel capacity was like 17.5 gallons...what a waste of $$$

The tank is quoted as 20.5 gallons in the literature I have seen. Mine does the same thing. It hits empty but the most I have ever put in was close to 18 gallons. My SRT-4 seems to hit empty prematurely as well. It is a 12 gallon tank, but the most I have ever had to add was 9.5. Who knows why they set the 3 gallon level as the empty point.

Everytime I fill up when the low fuel light comes on it only takes about 17 gallons and I know the 07 has almost a 21 gallon tank!! So, today I drove about 20-30 miles after the 0 miles left indicator before filling up and it still only took 17.8 gallons!! This reserve is set WAY too high!!!!!!!!

better to be safe than sorry, my mother always said!

(sorry, i'm on vacation in NYC and I'm a little buzzed)
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lol @ idealrides.... enjoy!

haha I forgot I posted that last night after getting back to my hotel room. I was at Buddha Bar and the owner was at our table... let me tell you, when $12 drinks are free they go down pretty quick :eek:
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I put in 19.3 gallons in about a month ago, and let the needle drop 1/8 of the wayt past the E. I went ~23 miles when it said 0 miles to empty. We have some room for error (our errors, anyway).

I just ran mine down to "E" after resetting the trip meter and mileage calculator, and filled it up. Here are the results;

18.756 gallons
216.7 miles
11.5 MPG (computer average mileage was 12.3)
27.6 mile range remaining (computer showed 0 miles to empty)

If the useable fuel quantity really is 21.1 gallons, I could have gone another 27.6 miles using my manually calculated numbers, or 29.5 miles if the computer mileage was correct.

A few things occurred to me when I was looking at the numbers.

1. I rather doubt the useable fuel quantity is 21.1 gallons. I would suspect that it would be closer to 20.5 or so, but that's just a wild guess. I will run it dry a couple of times and determine what the actual useable quantity is some time soon. (stay tuned for details)

2. If I only had an actual useable fuel quantity of 20.5 gallons, my range to empty would only have been 20.7 miles.

3. I think the computer calculates fuel mileage from fuel quantity changes only when the vehicle is actaully moving, so that idling at a stand still does not factor into it's calculation. Just a guess as to why there is a discrepancy between the two MPG calculations.

I still need to pay attention to what the range to empty figure is when the fuel low warning light illuminates. I suspect that it is "0", and that the fuel remaining at that point is a "reserve" quantity.

It would be cool to be able to get into the computer and reprogram the range calculation and the low level light actuation point.:cool:

I will be checking these numbers a few more times to see if they are consistent.

Im gonna push it to the limit today on the way home from work...i'll let you know how it goes

Hey TXBlu - nice post - good info

How about you run the vehicle until it runs out and then tell us exactly how much gas it takes to fill-it-up.

I know its a sacrifice but its for the good of the forum members - Its a higher calling:D

I plan on doing exactly that 3 or 4 times so that I know the results are somewhat accurate. Don't worry, I'll have a gas can in the back with 2.5 gallons of fuel in it so I'll have plenty to get me running again!!!

By the way, thanks for the positive feedback. I appreciate it!:D

yea, thanks txblu... you have instilled confidence in me... i will venture into the treacherous world of "0 miles to empty" now because of you

Oh, man! Don't put that on me! I hearby disavow myself of any resposibility for anyone that runs out of gas!!!:eek:

lol @ TXBLU........ that last post made me laugh!! :D

haha, if i do run out of gas, i'll be giving you a call looking for that 2.5 gallon gas tank!

I would be careful about deliberately running the fuel tank dry. Most fuel pumps today use fuel as coolant and lubricant. So, if you run the tank dry, it can shorten the fuel pump's life or burn it up. This seems to be common occurance with the Dakota pickups (I own one). Just a word of caution...

Yeah, I hear what you're saying, and that is a concern, but I figure I'll throw myself on that grenade for the benefit of the rest of you guys! Besides, it's still under warranty, and push come to shove, if I have to change it myself, it will get a better than stock pump. Plus, I just don't seem to care!!!:p

txblu, you da man! can't wait to see the numbers.

On Friday, I drove home on E with gas light on and "0 miles to empty".

I measured it exactly from when it hit "0 to empty" and i went 22.3 miles (mind you this is in Los Angeles Friday evening traffic == the worst).

When I got to the gas station, I topped off at only 18.8 gallons....so i had about 25 miles left in her.

On Friday, I drove home on E with gas light on and "0 miles to empty".

I measured it exactly from when it hit "0 to empty" and i went 22.3 miles (mind you this is in Los Angeles Friday evening traffic == the worst).

When I got to the gas station, I topped off at only 18.8 gallons....so i had about 25 miles left in her.

i just went 21 miles past "0 miles" today and filled up and it only took 18.5 gallons. '07s are supposed to have the larger tank so i guess i still could have gone another 36 miles. thats a huge reserve if you ask me.

I haven't picked mine up yet, but does it matter if it is angled in any direction or another when you're filling up?

If i sit on a slight uphill incline in my m3, it takes about a gallon more then if I fill it in the other direction...

Alex

My 2007 maual says that it holds 21 gallons. I have driven for 10 miles once the computer said zero and the reserve light was on. I could only put in 18.5 gallons, leaving 2.5 gallons in the tank. Dealer said this was not unusual. A couple years back some jeeps and dodges had issues with the computer saying 30 or more miles when the tank was empty. I would guess they are now erring on the side of caution.

I had the same happen last night and took almost 18 gals John

The tanks on the 2006's are smaller - 20 gallons I beleive. Two night ago I filled it up with 19.70 Gallons - the most I have ever put in, and the gauge was sitting at LEAST one mark under the E. I have been driving around now with the "X miles to empty" and will set my trip B to show how many miles it will go before I think I should fill again.

I don't see why this is a problem? If I had to guess, it's a small safety issue to keep us from being stranded somewhere with no gas.

Its a truth and ethics problem - our computers are lying to us:mad:

I run it down as low as I can because I use a local store reward points to get money off gas. Therefore it makes sense to get as much on your fillup as possible.
See receipt:
http://www.p3productions.com/srt/receipt.jpg

I ran as low as my nerve would allow the other day and got 18.7 gallons which I guess means I still had a long way to go:eek:

Its a truth and ethics problem - our computers are lying to us:mad:

I run it down as low as I can because I use a local store reward points to get money off gas. Therefore it makes sense to get as much on your fillup as possible.
See receipt:
http://www.p3productions.com/srt/receipt.jpg

I ran as low as my nerve would allow the other day and got 18.7 gallons which I guess means I still had a long way to go:eek:

Wow, that's a cool point/reward system. Never heard of it before.

Alex

Yes its Giant Eagle Stores in NW PA - Everytime you buy groceries you get money off gas. Consequently I buy as much as possible at their store.

I'm trying to get them to mortgage my house:D

Its a truth and ethics problem - our computers are lying to us:mad:

I run it down as low as I can because I use a local store reward points to get money off gas. Therefore it makes sense to get as much on your fillup as possible.
See receipt:
http://www.p3productions.com/srt/receipt.jpg

I ran as low as my nerve would allow the other day and got 18.7 gallons which I guess means I still had a long way to go:eek:
Do you get a discount everytime you fill up? If so, isn't your discount always the same no matter how much you get?

Yes its Giant Eagle Stores in NW PA - Everytime you buy groceries you get money off gas. Consequently I buy as much as possible at their store.

I'm trying to get them to mortgage my house:D

Sounds like the promotions my grocery store (Weis Markets) runs down here. You get a point for every dollar you spend over some specified period. Then you use the points for either a % off your bill, or free stuff, depending upon the promotion.

Unfortunately here the free stuff is crap like cookware. I'd much rather see $1+ off gas.

Alex

Yeah, I hear what you're saying, and that is a concern, but I figure I'll throw myself on that grenade for the benefit of the rest of you guys! Besides, it's still under warranty, and push come to shove, if I have to change it myself, it will get a better than stock pump. Plus, I just don't seem to care!!!:p

Certainly you must be out of gas by now. God knows I fill up every 4 days (150-175 miles). You need to post up the results. Or else I want the time back it took me to read all 5 pages and not hear the end of the story! :p

I ran mine down to EMPTY. Have to say it was damn close. The indicated fuel range on the dash said "0" -- NO LIE! I made it 2 more miles to the station and filled 19 gallons.
I did it but I was sweating the whole way.

I drove 27 miles when indicator said "0 Miles" and when I got to the gas station I filled with 19.94 gallons. The gas gauge was sitting at the bottom (same as if the car was off, maybe slightly higher, but barely) of the sweep range well past E.

I must be missing something here.I would much rather pump 17 gallons into my jeep than 20 if my computer says "0" miles to empty.Am I being cheated or something.Better than having it say 10 miles to empty and really be empty.Also when you check your MPG do the math if you want an accurate reading.I am really surprised at how sometimes the computer is pretty close to the actual reading,but it all depends on too many variables.if you do alot of city driving it will be different than alot of highway.No matter how you look at it it is still a gadget.Just my 2 cents.Good Luck.

<voice name="steven tyler"> livin on tha edge! </voice>

http://images22.fotki.com/v754/photos/4/43063/3148071/empty-vi.jpg
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Oh, me likey this gas gauge.... I'm gonna ring the crap out of it now....lol, I'm a procrastinator as it is, so......

I'll finish this post later cause I'm procrastinating about it right now lol!

I know this is an old thread. I think the reason they want you to keep a couple gallons in the tank is because over time, dirt and sedement (sp.) is floating on the bottom of the tank and the last thing you want is that crap going through your fuel system and fuel injectors. Just a guess.

T-Time
Chicago

I know this is an old thread. I think the reason they want you to keep a couple gallons in the tank is because over time, dirt and sedement (sp.) is floating on the bottom of the tank and the last thing you want is that crap going through your fuel system and fuel injectors. Just a guess.

T-Time
Chicago

Maybe, but we do have the modern miracle of fuel filters, right from the factory! ;)

Maybe, but we do have the modern miracle of fuel filters, right from the factory! ;)
Where is it? And how do you change it?

T-Time:cool:

Right from the service manual:

FILTER-FUEL
DESCRIPTION
Two fuel filters are used. One is located at the bottom of the fuel pump module. The other is located inside the module. A separate frame mounted fuel filter is not used with any engine.

Both fuel filters are designed for extended service. They do not require normal scheduled maintenance. Filters should only be replaced if a diagnostic procedure indicates to do so.

Right from the service manual:

How about this. I don't want the crap floating at the bottom of the tank to clog my filter, and I get a CEL.:D

Fair enough... :cool:

I agree! :) :) :) :)

It seems the guage is set up that way, it is a heavy drinker, and we all know how some like to wait until the last drop to fill up. They dont want you to have to push that 6,000 lb srt8 to the gas station. I have driven until the needle is all the way down and the most it's taken was 18.8 gals. Thats as far as my test will go.

Did anyone ever consider that the specs are wrong and it is only a 20 Gallon Tank Or less?

after a few months of owning my truck i had the same problem... i was down to E and when i fill up... i only get 3/4 out of the whole tank... went back to the dealer... they fixed the problem... they replaced something... but i dont remember what... i can look into the dealer paperwork that ive gotten

Well something is most likely wrong. I went a quarter past empty and only filled up 19 gallons.