Out of gas at only 9 gallons? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Whoodoo · 08-25-2018, 08:43 AM

I took a long road trip recently and the car started acting like it was out of gas after only 270 miles. The fuel gauge was at the 1/4 mark. Luckily I barely made it to a gas station, but it only took just over 9 gallons before the pump shut off.

As I was chugging into the gas station, the check engine light came on, but after two short trips around town, the light went off.

Has anyone had similar issues?

SuperTom · 08-25-2018, 11:24 AM

Quote:

Originally Posted by Whoodoo

I took a long road trip recently and the car started acting like it was out of gas after only 270 miles. The fuel gauge was at the 1/4 mark. Luckily I barely made it to a gas station, but it only took just over 9 gallons before the pump shut off.

As I was chugging into the gas station, the check engine light came on, but after two short trips around town, the light went off.

Has anyone had similar issues?

Mine was a few mm away from the empty line and the gas light went on the other day. I'd say almost in between the 1/4 mark and empty mark. Im wondering how many gallons are left when the light comes on. It may come on sooner for these cars since its such a small tank

Bonburner · 08-25-2018, 04:33 PM

I've found my light turns on after 10 gallons are used up from full, so 3.2 gallon left in the tank with the gas light.

gravitylover · 08-25-2018, 06:08 PM

My light goes on around 11 gallons used.

Ultramaroon · 08-25-2018, 06:26 PM

Quote:

Originally Posted by Whoodoo

I took a long road trip recently and the car started acting like it was out of gas after only 270 miles. The fuel gauge was at the 1/4 mark. Luckily I barely made it to a gas station, but it only took just over 9 gallons before the pump shut off.

As I was chugging into the gas station, the check engine light came on, but after two short trips around town, the light went off.

Has anyone had similar issues?

You had plenty of fuel.

The check-engine light is not the low-fuel light.

There are a bajillion things that can go wrong which feel like the car is running out of gas because the end result is the same. The engine stumbles.

Check to see if a trouble code was stored. If you have one, share it with us.

FRSBRZGT86FAN · 08-25-2018, 07:07 PM

Quote:

Originally Posted by Whoodoo

I took a long road trip recently and the car started acting like it was out of gas after only 270 miles. The fuel gauge was at the 1/4 mark. Luckily I barely made it to a gas station, but it only took just over 9 gallons before the pump shut off.

As I was chugging into the gas station, the check engine light came on, but after two short trips around town, the light went off.

Has anyone had similar issues?

What? You had a check engine light? Not a low fuel light, and your profile shows you have a vortech supercharger. Time to take it to the tuner or wherever the install was done and have them run the codes and check the tune. Hopefully the code is still there, or you can reproduce it under the same conditions

Ultramaroon · 08-26-2018, 12:42 AM

Quote:

Originally Posted by FRSBRZGT86FAN

vortech supercharger

I don't see it working out for OP in the long run.

FRSBRZGT86FAN · 08-26-2018, 01:57 AM

Quote:

Originally Posted by Ultramaroon

I don't see it working out for OP in the long run.

How so? The fact that the vortech is a bad supercharger for our cars that was plagued with porblems or his issues diagnosing problems or confusion with the CEL and low fuel light lmao...

Ultramaroon · 08-26-2018, 02:39 AM

Quote:

Originally Posted by FRSBRZGT86FAN

How so? The fact that the vortech is a bad supercharger for our cars that was plagued with porblems or his issues diagnosing problems or confusion with the CEL and low fuel light lmao...

More the latter and that he didn't think to mention his mods in the OP. Shows a lack of appreciation for the added complexity and risk.

Whoodoo · 08-26-2018, 01:39 PM

Quote:

Originally Posted by Ultramaroon

More the latter and that he didn't think to mention his mods in the OP. Shows a lack of appreciation for the added complexity and risk.

I didn’t mention any of my mods because I am very skeptical that it has anything to do with the supercharger or the tune. If there has been similar issues with unmodified cars, then that would narrow things down a ton.

Thanks for the input so far. I’ll get the codes read and report back later today.

Ultramaroon · 08-26-2018, 02:12 PM

Quote:

Originally Posted by Whoodoo

I didn’t mention any of my mods because I am very skeptical that it has anything to do with the supercharger or the tune. If there has been similar issues with unmodified cars, then that would narrow things down a ton.

Thanks for the input so far. I’ll get the codes read and report back later today.

Ah, gotcha. Well, it's always best to put it all out there up front and let us sort it out. Speaking for myself, I get kinda grumpy when I learn that potentially valuable info had been omitted.

But I keep coming back so I guess I can only blame myself.

Let us know if your ECU stored any codes.

PhyrraM · 08-27-2018, 11:30 AM

I have similar issues. Stumbling and hesitation around 1/4 tank. No low fuel light and "lean" related codes if I push it. It will eventually refuse to start just as if it was truly out of gas. Fill up is as expected for 1/4 tank left...about 9-10 gallons.

I believe it has to do with the siphon "jet" device that pulls fuel from the right (passenger) side of the tank to the left (drivers) side where the fuel pump is. You can sort of verify this by taking a hard right hand turn to slosh fuel from right to left and see if you get more miles from the tank.

I plan on pulling the pump assembly to make sure it's all assembled properly because I have had it out to install a higher flow fuel pump in the past. The siphon tube is the only hose that that connects to the assembly (at the bottom) inside the tank.

SuperTom · 08-27-2018, 01:30 PM

Quote:

Originally Posted by FRSBRZGT86FAN

What? You had a check engine light? Not a low fuel light, and your profile shows you have a vortech supercharger. Time to take it to the tuner or wherever the install was done and have them run the codes and check the tune. Hopefully the code is still there, or you can reproduce it under the same conditions

Ill admit I breezed through his comment and didn't realize it was a check engine light and not a gas light.

So when you guys fill back up with gas the check engine light goes away??

Ultramaroon · 08-27-2018, 01:41 PM

Quote:

Originally Posted by SuperTom

So when you guys fill back up with gas the check engine light goes away??

Yes but then my TPMS starts flashing so I just leave the cap off.

08-25-2018, 08:43 AM	#1
Whoodoo Member Join Date: Apr 2018 Drives: '15 BRZ, Vortech supercharger Location: Binghamton, NY Posts: 36 Thanks: 0 Thanked 9 Times in 8 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Out of gas at only 9 gallons? I took a long road trip recently and the car started acting like it was out of gas after only 270 miles. The fuel gauge was at the 1/4 mark. Luckily I barely made it to a gas station, but it only took just over 9 gallons before the pump shut off. As I was chugging into the gas station, the check engine light came on, but after two short trips around town, the light went off. Has anyone had similar issues?

08-25-2018, 06:08 PM	#4
gravitylover Senior Member Join Date: Nov 2014 Drives: 2013 BRZ Premium 6MT White Location: SE NY Posts: 1,503 Thanks: 1,218 Thanked 669 Times in 474 Posts Mentioned: 7 Post(s) Tagged: 1 Thread(s)	My light goes on around 11 gallons used. __________________

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08-27-2018, 11:30 AM	#12
PhyrraM Senior Member Join Date: Aug 2012 Drives: '17 BRZ PP, old Legacy SSs and SVXs Location: Redlands, CA Posts: 119 Thanks: 34 Thanked 85 Times in 49 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	I have similar issues. Stumbling and hesitation around 1/4 tank. No low fuel light and "lean" related codes if I push it. It will eventually refuse to start just as if it was truly out of gas. Fill up is as expected for 1/4 tank left...about 9-10 gallons. I believe it has to do with the siphon "jet" device that pulls fuel from the right (passenger) side of the tank to the left (drivers) side where the fuel pump is. You can sort of verify this by taking a hard right hand turn to slosh fuel from right to left and see if you get more miles from the tank. I plan on pulling the pump assembly to make sure it's all assembled properly because I have had it out to install a higher flow fuel pump in the past. The siphon tube is the only hose that that connects to the assembly (at the bottom) inside the tank.

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