fuel gauge shenanigans - Toyota Yaris Forums

mryaris · 11-27-2010, 06:02 PM

This has happened twice to me know.....the latest last night. I filled up my car yesterday afternoon then made a trip into Denver (~55 miles round trip) then took off to drive to southeast Denver later that night to play poker. The first bar blinked off at 81.8 miles and I got to my destination around the 90 mile mark. We finished up the game around 12:30am and I gave a friend a ride home. We get to his place and I stop and keep the car idling for a few minutes and the first bar reappears! It was around mile 91.3 and it stayed lit until mile 97.4 when it went out again.

Weird stuff. Has anyone else had a bar reappear before??

Betrivent · 11-27-2010, 06:25 PM

Yes, but only at very close to the threshold.

TEHxFALLEN V1.2 · 11-27-2010, 07:11 PM

The fuel sensor might me loose. Happened to me before.

R2D2 · 11-27-2010, 07:13 PM

Were you by chance on a hill while idling when the bar reappeared?

Kal-El · 11-27-2010, 08:01 PM

It's never happened to me and in away that surprises me. I'd actually expect it too happen all the time near the bar thresholds with gas sloshing around in the tank.

CTScott · 11-27-2010, 09:53 PM

The fuel gauge reads an analog signal from the fuel sender. The sender is fed raw battery voltage, rather than a regulated voltage, so the fuel gauge can change a bar just with fluctuations in battery voltage.

mryaris · 11-27-2010, 10:00 PM

The driveway did have a slight inclination, so it's possible that the fuel migrated to one end of the tank and the sender picked it up as additional fuel. It's just strange that it took so long to turn off again. All-in-all it's not a big deal....just one of those things that makes you scratch you head.

11-27-2010, 06:02 PM	#1
mryaris Drives: 2010 Carmine Red hatchback Join Date: Mar 2009 Location: Colorful Colorado Posts: 208	fuel gauge shenanigans This has happened twice to me know.....the latest last night. I filled up my car yesterday afternoon then made a trip into Denver (~55 miles round trip) then took off to drive to southeast Denver later that night to play poker. The first bar blinked off at 81.8 miles and I got to my destination around the 90 mile mark. We finished up the game around 12:30am and I gave a friend a ride home. We get to his place and I stop and keep the car idling for a few minutes and the first bar reappears! It was around mile 91.3 and it stayed lit until mile 97.4 when it went out again. Weird stuff. Has anyone else had a bar reappear before?? __________________

11-27-2010, 07:11 PM	#3
TEHxFALLEN V1.2 Banned View User's Garage Drives: '08 Lexus IS-F Join Date: Oct 2008 Location: Calabasas, CA Posts: 1,890	The fuel sensor might me loose. Happened to me before. __________________ DON'T LIKE ME? TAKE A SEAT WITH THE REST OF THE BITCHES WHO ARE WAITING FOR ME TO GIVE A FUCK. Sponsored by: Micro Image http://microimageonline.com

11-27-2010, 07:13 PM	#4
R2D2 Crazy Oil Sniffer Drives: MM 09 Yaris 5 Dr LB "Click" Join Date: May 2009 Location: ME Posts: 498	Were you by chance on a hill while idling when the bar reappeared? __________________ "The howl was the sound of God’s casting pot, the morphing of my cells into shape, the forming of oceans out of molten premordial plasma. And I could feel it. I could cry for it. I could cry with it." -The Fitful One

11-27-2010, 09:53 PM	#6
CTScott ULTIMATE View User's Garage Drives: 09 5dr LB, 2x 08 3dr LB Join Date: Oct 2008 Location: USA, CT Posts: 13,460	The fuel gauge reads an analog signal from the fuel sender. The sender is fed raw battery voltage, rather than a regulated voltage, so the fuel gauge can change a bar just with fluctuations in battery voltage. __________________

11-27-2010, 10:00 PM	#7
mryaris Drives: 2010 Carmine Red hatchback Join Date: Mar 2009 Location: Colorful Colorado Posts: 208	The driveway did have a slight inclination, so it's possible that the fuel migrated to one end of the tank and the sender picked it up as additional fuel. It's just strange that it took so long to turn off again. All-in-all it's not a big deal....just one of those things that makes you scratch you head. __________________

11-27-2010, 06:25 PM	#2
Betrivent Not quite a noob Drives: e46 325 Join Date: Jul 2009 Location: edmonton Posts: 1,408	Yes, but only at very close to the threshold.

11-27-2010, 08:01 PM	#5
Kal-El Drives: 07 Yaris S Sedan 5-Speed Join Date: Oct 2008 Location: Massachusetts Posts: 2,179	It's never happened to me and in away that surprises me. I'd actually expect it too happen all the time near the bar thresholds with gas sloshing around in the tank.

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