Gas Guage to empty - 2014+ Jeep Cherokee Forums
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post #1 of 27 (permalink) Old 02-15-2017, 07:13 PM Thread Starter
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Gas Guage to empty

New owner so kind of a dumb question, but I think a useful one for other new owners.

What is the Empty tank grace period? For reference, my gas guage just hit the red section and showed about 30 miles left on the range. Now the range reads LOW but I'm curious just how much is really left in there?

On my subaru I could run the range down to about 10 or 20 and it was then replace the number with a dotted line, meaning fill up quick. I found when filling up at that point I still had about a full gallon of grace fuel.

Anyone care to chime in? I don't plan on running out of fuel but I would like to have an idea of what the leftover amount is. I guess another good way is to fill it up and take the difference from 15.8?
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post #2 of 27 (permalink) Old 02-15-2017, 07:19 PM
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You'll most likely get very varied responses due to different MPG experienced by many. In my case i'd be on the bottom of things since most my driving is up and down and around the mountains. I'm only getting 19-22 mpg max (varies) due to my driving type/style and location. I've never ran it down, but sure many have. due to my location we never head up the mountain to home without topping off. I'd be interested in hearing from others as well, but I simply can never let it get that low.

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post #3 of 27 (permalink) Old 02-15-2017, 07:52 PM
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I've found when mine hits "Range Low" there is about a gallon left in the tank. I've pushed it far enough that when the arrow is at the end of the red line there is about 1/3 to 1/2 of a gallon left in the tank. YMMV

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post #4 of 27 (permalink) Old 02-15-2017, 07:58 PM
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I'm too lazy to go dig through the manual, but I seem to remember it actually listing the capacity, and it being a bit over a gallon. 1.6 if memory serves, but dont quote me on that.

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post #5 of 27 (permalink) Old 02-15-2017, 08:03 PM
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60-90 miles according to this site/chart
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post #6 of 27 (permalink) Old 02-15-2017, 08:15 PM
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Originally Posted by peep6543 View Post
....Anyone care to chime in? I don't plan on running out of fuel but I would like to have an idea of what the leftover amount is.
Problem is it may not be the same from KL to KL.

Only way to know for sure about yours is carry can with extra gas. Drive and stay on level road. When gauge touches the lowest point, count the miles until the engine starts missing.
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post #7 of 27 (permalink) Old 02-15-2017, 08:49 PM Thread Starter
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Mine was a few pixels from the end of the red bar, we'll to the left of the middle of the red section. I decided not to chance it on my first tank and filled up. I got a little over 14 gallons so that means at the end of the bar there should be a solid gallon in there. Depending on current driving that can be very helpful information.

I would have looked at the manual but they lost mine at the dealership so they ordered one in for me. That's why I keep asking novice questions.
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post #8 of 27 (permalink) Old 02-16-2017, 01:07 AM
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Range "low", and fuel warning goes off for me when there are about 2gal left, just like other cars I've had
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post #9 of 27 (permalink) Old 02-16-2017, 02:06 AM
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With the fuel systems now days do not drive to empty , you will trigger all sorts of problems and codes, and you do not want the C--p in the bottom of the tank in your fuel lines...
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post #10 of 27 (permalink) Old 02-16-2017, 07:20 AM
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Actually about 1 gallon in reserve at that point. There is also some unusable gas always in the tank sump.
The big issue is not how much gas is remaining to drive on, but how much gas is left to cool your fuel pump.
A hard working fuel pump can overheat if not cooled properly. The surrounding gas will keep it cool. The more the cooler it will stay.
Fuel pumps are very durable but are susceptible to degradation over time by overheating continually. The cooler they run over the years the longer they will last.
They are very expensive to replace.
I believe there is a primary filter in the tank to protect the pump's impeller from ingesting any debris that accidentally gets introduced into the tank.
Usually not an issue as the tank will stay clean if you are careful while fueling.
Filling at 1/4 remaining is good practice. If the light comes on you waited to long and are likely hurting the life of your pump.
Just my humble opinion.
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