4 extra gallons......where is it? Look MOM I can read with my eyes closed!!

[Jeepasaurus_Rex]

Gauge reads empty, tank has over 1/8th of a tank.

I imagine this bothers some people because they would like the gauge to be more accurate.

My 1998 TJ was the same way, but I don't know of any other vehicles I have owned that show empty when the tank is over 1/8th.

haha, no I understand what the "issue" is. I just can't understand what makes it an issue. The fuel is still there. Sure, the lights on, but you've still got access to the full 22 gallons. Or 18-19ish for the diesel.

I fill up my diesel around 1/8-1/4 and usually put in 15-16 or so. I've ran it past the light many many times and was able to make it really far. Like another 60-70 something miles. Which was about another 3-4 gallons, which is pretty on par of what is expected.

I'm not knocking anyone for being upset or frustrated, I just simply can't comprehend how anyone lets it steal their energy lol

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[ShadowsPapa]

Yeah, i dont need the car flashing low fuel when I have 20 percent of my capacity left.

One of the highlights of the Jeep, for me, was a 22 gallon gastank and the range that gets me.

The trucks computer feels like its programed for the Diesel gas tank. Which now that I think about it, could be very much the issue!!

20% Wow.
Mine comes on when it is down to a range of about 30 miles left. I drive a bit more and then -
I can get 18.5 to 20 in it
If I get 20 in it then I'd say I've got only 10% capacity left.

Hated accurate gauges? That is crazy.

And it left more than one person stranded of course. I only ran out once and that was as I was approaching the gas station. I was able to push my car that remaining 100 feet into the station.
The problem is that today, they have to sell to the masses, get it suitable for the lowest common denominator. People who can barely pump their own gas and still can't program a DVR or figure out their phone are driving 2 tons of vehicle down the highway. Tell them to turn their computer off, then count to 10 and turn it back on and ask what do you see now and they say "exactly the same screen I had before - because all they did was hit the switch on the monitor.
Hell, half the time they ignore gauges - temp is up to 250 and let's keep driving! I know I can make it!
That's what they have to design for. Not someone who calculates the square inches on an odd shaped plate, converts it to square feet to the second decimal point and then sets a rectifier to the correct hundredth of an amp and tripled checks their work.
It's gotta be made for the executive that doesn't know what a volt is and has to ask how to operate a gas pump.
They have to make it for this guy - that the IHP found alongside I80 with his hood up, waiting for help.
Trooper stops, asks the guy what's wrong.
Gee, it made some funny sounds, jerked a bit and then just stopped.
The trooper looks at the cluster, sees the miles, it's got fuel, so he goes to the engine bay and looks around to see if he could figure it out.
Trooper pulls the dipstick, wipes it, puts it back and pulls it out again. Still dry.
He goes back to the motorist sitting in his car - when was the last time you had the oil changed in this?
Oh, it's a lease car, I don't have to do that.
36,000 miles on the odo.

Yeah, it happened. That's the sort they have to make these for because they can't read gauges or figure there MUST be one more drop in there and that will take me 20 miles. They ignore lights and gauges. You know that fool had a red light come on, or the OP gauge dropped to nothing, and the temp likely went up.

These are programmed for today's "motorist" - and I use that term loosely.

 

[Gvsukids]

These are programmed for today's "motorist" - and I use that term loosely.

Hence the invention of self driving cars.

 

[AstroZombie]

E is probably the minimum amount needed to maintain a healthy pump too. Just a thought.

 

[sharpsicle]

There sure is a lot of complaining in here about what is, in the end, a reasonable safety buffer for fuel. Never knew that not running your tank bone dry was a problem.

 

[AstroZombie]

Just a group of crotchety old men engaging in some witty banter.

 

[AstroZombie]

i will admit i didn't read into the line on my sheet enough and paid the price here for not really reading it so I'm just going with the flow. I got paid last night so FULL TANK FRIDAY!!!

 

[AstroZombie]

quickly approaching Gas Light Monday!!

 

[Duece McCracken]

There sure is a lot of complaining in here about what is, in the end, a reasonable safety buffer for fuel. Never knew that not running your tank bone dry was a problem.

A 22 gallon tank, that the dash says only 17-ish gallons is useable. Thats my gripe. Being lied to in a flashy way.

Full tank of gas, 275 miles to empty? Yeah, thats some BS.

I dont need on board calculations to be super loose estimation. I want them to be reasonably accurate or just don't exist. I'd rather just read an actual gauge, knowing my general mpg and fuel capacity.

My JT is low mileage, Im hoping the system learns, and corrects.

 

[AstroZombie]

@Duece McCracken
ur pasta, who art in a colander, draining be your noodles. Thy noodle come, Thy sauce be yum, on top some grated Parmesan. Give us this day, our garlic bread, …and forgive us our trespasses, as we forgive those who trample on our lawns. And lead us not into vegetarianism, but deliver us some pizza, for thine is the meatball, the noodle, and the sauce, forever and ever. R’amen.

 

[sharpsicle]

A 22 gallon tank, that the dash says only 17-ish gallons is useable. Thats my gripe. Being lied to in a flashy way.

Full tank of gas, 275 miles to empty? Yeah, thats some BS.

I dont need on board calculations to be super loose estimation. I want them to be reasonably accurate or just don't exist. I'd rather just read an actual gauge, knowing my general mpg and fuel capacity.

My JT is low mileage, Im hoping the system learns, and corrects.

To be honest, it sounds like no matter what, you aren't going to like the fuel estimation system in modern vehicles.

I would suggest you go old-school instead, and base your fill-up needs on mileage since last top off. If you know how many miles you can get to a tank, then you can just ignore the guesstimates altogether and save some headache.

 

[ShadowRock]

Questions -
Would you rather the pump run dry and get hot and your engine stop as quick as the gauge says "empty"?
If the gauge calibration was wrong - would you be pissed if you were 10 miles from the next station when it died - and you needed a fuel pump replaced?
Why would you talk to a service manager about it?
Would you rather that when it said E, it simply DIED and refused to move?


Heck we used to gripe, bitch, moan, complain, and yell at the dealers because when it said empty it WAS empty. We hated accurate gauges! We'd all talk about how you didn't dare drive past a station if you had 1/4 tank or less because as quick as that gauge hit E you were walking.
So now that problem is fixed and people are complaining about that ?
It's called "reserve" those are reserved gallons to get you past Atlanta at 4 pm on a Friday.
Or - through Kansas where there's no signs of a building let alone gas for as far as the eye can see.

Just Like it with a Little more accuracy. When I was With Mercedes Benz For 20 years as a Master Systems Tech, you would not believe the Questions asked of us and the Fuel Related empty Tank Problems we had in 2000-2003 with ML's & C-Class units . Also I like to know who I am dealing with at Jeep. I worked at Tempe Dodge /Jeep and know everyone there. Do not Know anyone at Casa Grande Dealer and they will not let me watch when they Change the oil. What are you Hiding. ?????.
I guess Knowledge can be Good or Bad .

 

[Duece McCracken]

To be honest, it sounds like no matter what, you aren't going to like the fuel estimation system in modern vehicles.

I would suggest you go old-school instead, and base your fill-up needs on mileage since last top off. If you know how many miles you can get to a tank, then you can just ignore the guesstimates altogether and save some headache.

Ford's estimations are spot on, I just was surprised by Jeep's math. Hence me doing the scientific approach and determing what is really going on, lmfao. This stuff has been on domestic vehicles for over a decade, never thought one of them would be this conservative.

Oh yeah, I sorted myself out, but it still feels like the system thinks the tank is 18 gallons, which would make all it's warnings much more appropriate. So I'm good, but my curiousity hasn't been satisfied.

I'm going to take a peek in Jscan and see if that capacity is adjustable. Would make a ton of sense.

 

[rchandler341]

Growing up my father always taught me that it was just as easy to keep the top half of the fuel tank filled as it was the bottom half of the fuel tank. I handed this simple way to never run out of fuel to my children. As to date the only one, in our family, to run a vehicle out of fuel was my sons wife, she must have not gotten the memo?

 

[Wheelin98TJ]

Ford's estimations are spot on, I just was surprised by Jeep's math. Hence me doing the scientific approach and determing what is really going on, lmfao. This stuff has been on domestic vehicles for over a decade, never thought one of them would be this conservative.

Oh yeah, I sorted myself out, but it still feels like the system thinks the tank is 18 gallons, which would make all it's warnings much more appropriate. So I'm good, but my curiousity hasn't been satisfied.

I'm going to take a peek in Jscan and see if that capacity is adjustable. Would make a ton of sense.

I just recently tested my F150. 12 miles to empty, about 3.3 gallons left in the tank.

I don't think the Jeep system thinks the tank is 18 gallons. This is just how Jeep is with their conservative low fuel warnings and empty readings. This was common forum talk 20 years ago in the TJ forums. People thought they had the smaller 15 gallon tank instead of the 19 or they thought they had a 15 gallon fuel pump and sending unit giving bad readings for a 19 gal tank.

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