gas tank gauge will not read after half tank

m5q8 · 03-05-2017, 02:00 PM

hi
few days ago my car shut down by itself and when I checked the gas gauge it was half tank
so after taking it to the shop he said u have no gas but gauge needle stuck on the middle so I filled it up and the gauge works just fine but after driving the gauge will stop at the middle and It will not read anymore
please help

fhaze3 · 03-05-2017, 03:33 PM

I always reset the trip odometer after a fill up. If I hit 250 miles and the fuel gauge was halfway I would know something was wrong.

sorry op, I know that didn't help, but I don't ever recall running vehicle out of gas unexpectedly.

Redrckt135 · 03-05-2017, 05:08 PM

Sounds like a question for your service advisor at the dealership.

Royce Martin · 03-05-2017, 07:29 PM

This used to happen to me because I would always wait until the tank is less than qt tank to actually fill up. You need a fuel injector/emission cleaning.

There can be dirt in your tank backed up cause the reader in there to not drop lower than a half tank reading. That's what I was told when it happened to me and it worked just fine afterwards. Unless it's something much bigger.

BMWM5NYC · 03-07-2017, 04:56 PM

I have had this happen on my motorcycles from time to time. I just run a bottle of Techron fuel system treatment (Gray bottle) and it clears it right up. I bet your level sensors are gummed up. Running low fuel levels frequently can do this.

TopEnd · 03-09-2017, 07:42 AM

does the fuel range decrease after the half tank? if it does. then the level sensor is good and may lead to a bad cluster. If the range and the needle both get stuck, then that may lead to a bad level sensor.

m5q8 · 03-12-2017, 03:48 AM

Quote:

Originally Posted by TopEnd

does the fuel range decrease after the half tank? if it does. then the level sensor is good and may lead to a bad cluster. If the range and the needle both get stuck, then that may lead to a bad level sensor.

yes rang and the gauge not working
so I guess the level sen is broken

My F15+G07 · 03-13-2017, 06:36 AM

If I'm correct on this one (and I've had the exact case like that before ) ... A friend of mine drove over a large pot hole, he thought the car ( BMW ) Killed all the wheels and suspension, after a brief check up there was no obvious signs of trauma, so he carried on till.... within a week I got a call that he run out of gas even though the gage showed 1/2 tank. We removed the gas tank caps ( under the rear seat ) and found that floating units ( they were being fitted ( seated )on rubber grommets ) in the tank was knocked out of its seat, that was all. hopefully that is all that you have, those gages are a mechanical devices after all. Hope that helps
Cheers !

03-05-2017, 02:00 PM	#1
m5q8 Private First Class 39 Rep 104 Posts Drives: m5 f10 manual Join Date: Jul 2015 Location: boca raton iTrader: (0)	hi few days ago my car shut down by itself and when I checked the gas gauge it was half tank so after taking it to the shop he said u have no gas but gauge needle stuck on the middle so I filled it up and the gauge works just fine but after driving the gauge will stop at the middle and It will not read anymore please help __________________ M5 f10 manual 748whp 1m coming soon
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03-05-2017, 03:33 PM	#2
fhaze3 GLG-20 282 Rep 389 Posts Drives: M3CX, 80LC/SC/3x, MK6GTI Join Date: Mar 2014 Location: North Georgia iTrader: (1)	I always reset the trip odometer after a fill up. If I hit 250 miles and the fuel gauge was halfway I would know something was wrong. sorry op, I know that didn't help, but I don't ever recall running vehicle out of gas unexpectedly.
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03-05-2017, 05:08 PM	#3
Redrckt135 Major 469 Rep 1,107 Posts Drives: 16 M5 & 17 X5M Join Date: May 2012 Location: Nj iTrader: (10)	Sounds like a question for your service advisor at the dealership.
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03-05-2017, 07:29 PM	#4
Royce Martin Royce Martin 65 Rep 572 Posts Drives: 2013 650i xdrive GC Join Date: Jan 2016 Location: Brooklyn iTrader: (0)	This used to happen to me because I would always wait until the tank is less than qt tank to actually fill up. You need a fuel injector/emission cleaning. There can be dirt in your tank backed up cause the reader in there to not drop lower than a half tank reading. That's what I was told when it happened to me and it worked just fine afterwards. Unless it's something much bigger.
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03-07-2017, 04:56 PM	#5
BMWM5NYC Captain 516 Rep 820 Posts Drives: 2013 F10 Monte Carlo Blue M5 Join Date: Dec 2008 Location: NYC iTrader: (0)	I have had this happen on my motorcycles from time to time. I just run a bottle of Techron fuel system treatment (Gray bottle) and it clears it right up. I bet your level sensors are gummed up. Running low fuel levels frequently can do this. __________________ Formally known as BMWM3NYC
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03-09-2017, 07:42 AM	#6
TopEnd Private First Class 19 Rep 124 Posts Drives: 2014 BMW M6 Gran Coupe Join Date: Jul 2016 Location: NYC iTrader: (0)	does the fuel range decrease after the half tank? if it does. then the level sensor is good and may lead to a bad cluster. If the range and the needle both get stuck, then that may lead to a bad level sensor.
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03-13-2017, 06:36 AM	#8
My F15+G07 First Lieutenant 62 Rep 394 Posts Drives: 2021 XB7 and 2015 F15 Join Date: Jul 2011 Location: Hamilton ON iTrader: (0)	gas tank If I'm correct on this one (and I've had the exact case like that before ) ... A friend of mine drove over a large pot hole, he thought the car ( BMW ) Killed all the wheels and suspension, after a brief check up there was no obvious signs of trauma, so he carried on till.... within a week I got a call that he run out of gas even though the gage showed 1/2 tank. We removed the gas tank caps ( under the rear seat ) and found that floating units ( they were being fitted ( seated )on rubber grommets ) in the tank was knocked out of its seat, that was all. hopefully that is all that you have, those gages are a mechanical devices after all. Hope that helps Cheers !
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