Fuel gage indicator

fxroar · 01-04-2010, 01:14 AM

So apparently I just got a new discovery! For the last few times I filled up my tank, I noticed that the gage no longer reads full. I'm the type that usually squeezes the trigger a couple extra times even after the automatic shutoff. The indicator is one less from full, which I thought was weird. Earlier today I went ahead and filled up one more time and the gauge showed the same result. One less ball from full. I ALWAYS fill up with 91 Octane and I ALWAYS get it from Shell. I know I am getting good gas. I am starting to get irritated on my vehicle. I never had so much trouble with a sportscar before ESPECIALLY when it's only 3 months old. Any feedback is highly appreciated. Should I just go to the dealership and start asking for replacements?

diablokev87 · 01-04-2010, 08:42 AM

I have noticed the same thing. It is usually when i fill up and have not turned off the engine. Also, take note of any incline your car may be on while you are filling up. I am pretty sure this is not a big problem.

Division · 01-04-2010, 09:07 AM

There are some other threads discussing this issue - I believe modshacks theory is correct, the sender gets slightly corroded causing the issue. There are some recommendations on fuel additives to correct the issue.

diablokev87 · 01-04-2010, 09:45 AM

Ahh that makes sense.

vipor · 01-04-2010, 09:52 AM

yeah try some fuel additives first for a couple tanks of gas.

if that doesn't work take it to the dealer for calibration or somethin. good be a sending unit with the wrong resistance or something.

Division · 01-04-2010, 09:52 AM

From: Anyone have a Fuel Gauge Issue?

Quote:

Originally Posted by Modshack

The reason for this is that the last contact on the sender spends more time uncovered by fuel then any of the others. This gives corrosion a chance to build up. When you fill up, the connection for the last light is not made because of this. As you drive a bit the sloshing fuel moves the contact arm up and down over that last connection. The corrosion is scrubbed off anf the light illuminates. Again, a bottle of Techron concentrate at your next fill-up will go a long way toward keeping these contacts clean..

I'd ignore the part at the end where someone says HFC and O2 Sensors are causing fuel gauge issues, but other than that- the thread should help.

>135I · 01-04-2010, 01:51 PM

I posted about the HFC theory. I was not sure if it could be related. Only reason I brought it up was because it didnt just happen once but twice now.

kenchan · 01-04-2010, 05:40 PM

i also noted that some gas pumps have tips that just dont let you fill to the actual full mark 'click.' it prematurely clicks and stops you from filling to the top.

ive had this issue on my 04 G for the longest time... use to fill at only Shell. just last year i started using a mobil station and at that station i can fill all the way to full.

fxroar · 01-05-2010, 01:13 AM

Quote:

Originally Posted by Division

From: Anyone have a Fuel Gauge Issue?

I'd ignore the part at the end where someone says HFC and O2 Sensors are causing fuel gauge issues, but other than that- the thread should help.

Thanks. There are gas stations that include techron as an additive. Would that be a better alternative gas? Or would it still be better to just purchase Techron bottle and add it on my next fill up?

Quote:

Originally Posted by kenchan

i also noted that some gas pumps have tips that just dont let you fill to the actual full mark 'click.' it prematurely clicks and stops you from filling to the top.

ive had this issue on my 04 G for the longest time... use to fill at only Shell. just last year i started using a mobil station and at that station i can fill all the way to full.

I don't think that's the issue because.. well.. It's kind of weird.. I ALWAYS fill up on the same Shell gas station and ALWAYS end up filling up on the same exact spot. But yeah.. my first 4-6 fill ups I didn't have any problems. This came up just recently. But thank you for the feed back.

Modshack · 01-05-2010, 12:09 PM

Quote:

Originally Posted by fxroar

Thanks. There are gas stations that include techron as an additive. Would that be a better alternative gas? Or would it still be better to just purchase Techron bottle and add it on my next fill up?

Put a bottle of the additive in...Might take several tries to completely clean the contacts..If this fixes it, you might want to consider a different fuel....

fxroar · 01-10-2010, 04:07 AM

Quote:

Originally Posted by Modshack

Put a bottle of the additive in...Might take several tries to completely clean the contacts..If this fixes it, you might want to consider a different fuel....

Alright.. Well.. I am starting to worry a lot about my vehicle. As advised.. I went and bought a bottle of Techron additive and poured into my almost empty fuel tank and then filled up to full. Since then, I've driven 65 some odd miles and the bar is already 4 round solid lights missing. What the hell.. Is this a reaction of the fuel system to techron? Is this something that will return to "normal" after the next fill up? I don't drive crazy enough to be burning that much fuel in 65 miles. 4 of those usually takes me 100+ miles before all this crap started happening to my vehicle.

pgkam_820 · 01-10-2010, 06:26 AM

Quote:

Originally Posted by fxroar

So apparently I just got a new discovery! For the last few times I filled up my tank, I noticed that the gage no longer reads full. I'm the type that usually squeezes the trigger a couple extra times even after the automatic shutoff. The indicator is one less from full, which I thought was weird. Earlier today I went ahead and filled up one more time and the gauge showed the same result. One less ball from full. I ALWAYS fill up with 91 Octane and I ALWAYS get it from Shell. I know I am getting good gas. I am starting to get irritated on my vehicle. I never had so much trouble with a sportscar before ESPECIALLY when it's only 3 months old. Any feedback is highly appreciated. Should I just go to the dealership and start asking for replacements?

It happened to the other day as well but while fuelling I didnt switch off the engine but when i got home, parked the car and letter that day i started the engine again, it went up full on the gauge again. I have no idea but i guessed it reset itself maybe.....

fxroar · 01-10-2010, 12:05 PM

Quote:

Originally Posted by pgkam_820

It happened to the other day as well but while fuelling I didnt switch off the engine but when i got home, parked the car and letter that day i started the engine again, it went up full on the gauge again. I have no idea but i guessed it reset itself maybe.....

Yeah that's right. Our Z tends to do that when you fuel while the engine's still on. But mine is a completely different story. I'm just waiting for a couple more fill ups with Chevron w/ Techron and see if that solves the problem. If everything else fails. I go to the dealer.

01-04-2010, 01:14 AM	#1 (permalink)
fxroar Track Member Join Date: Oct 2009 Location: San Diego, CA Posts: 525 Drives: '10 40th Anniversary Rep Power: 17	Fuel gage indicator So apparently I just got a new discovery! For the last few times I filled up my tank, I noticed that the gage no longer reads full. I'm the type that usually squeezes the trigger a couple extra times even after the automatic shutoff. The indicator is one less from full, which I thought was weird. Earlier today I went ahead and filled up one more time and the gauge showed the same result. One less ball from full. I ALWAYS fill up with 91 Octane and I ALWAYS get it from Shell. I know I am getting good gas. I am starting to get irritated on my vehicle. I never had so much trouble with a sportscar before ESPECIALLY when it's only 3 months old. Any feedback is highly appreciated. Should I just go to the dealership and start asking for replacements? __________________ Fast Intentions / K&N / Blox / Evo-R / Uprev / Forgestar 19" F14 / R40 / NST / Z1 / SDCE / H&R / Kenwood / ISS Forged 20" FM10R

01-04-2010, 09:52 AM	#5 (permalink)
vipor A True Z Fanatic Join Date: Aug 2009 Location: Euless, TX [ DFW ] Age: 42 Posts: 13,531 Drives: Nismo 09-0183 QAB Rep Power: 49	yeah try some fuel additives first for a couple tanks of gas. if that doesn't work take it to the dealer for calibration or somethin. good be a sending unit with the wrong resistance or something. __________________ 2009 NISMO # 0193 \| QAB \| Albums! \| 05.04.10 (Dynojet) 291.94hp/248.28tq Oil Cooler (DIY) \| Custom Headlights \| GTSPEC Braces \| F.I. Long Tube Headers

01-04-2010, 01:51 PM	#7 (permalink)
>135I Enthusiast Member Join Date: Apr 2009 Location: Radcliff, KY Age: 42 Posts: 409 Drives: 2003 Cobra Rep Power: 16	I posted about the HFC theory. I was not sure if it could be related. Only reason I brought it up was because it didnt just happen once but twice now. __________________ I will miss my Z. I hope she goes to a good home.

01-04-2010, 08:42 AM	#2 (permalink)
diablokev87 Base Member Join Date: Aug 2009 Location: Queens NY Posts: 246 Drives: 09 Niss 370Z Blue A7 Rep Power: 16	I have noticed the same thing. It is usually when i fill up and have not turned off the engine. Also, take note of any incline your car may be on while you are filling up. I am pretty sure this is not a big problem.

01-04-2010, 09:07 AM	#3 (permalink)
Division Base Member Join Date: Jul 2009 Location: Central FL Posts: 199 Drives: 2009 370Z Sport Rep Power: 16	There are some other threads discussing this issue - I believe modshacks theory is correct, the sender gets slightly corroded causing the issue. There are some recommendations on fuel additives to correct the issue.

01-04-2010, 09:45 AM	#4 (permalink)
diablokev87 Base Member Join Date: Aug 2009 Location: Queens NY Posts: 246 Drives: 09 Niss 370Z Blue A7 Rep Power: 16	Ahh that makes sense.

01-04-2010, 05:40 PM	#8 (permalink)
kenchan A True Z Fanatic Join Date: Aug 2009 Location: N/A Posts: 76,801 Drives: N/A Rep Power: 141521	i also noted that some gas pumps have tips that just dont let you fill to the actual full mark 'click.' it prematurely clicks and stops you from filling to the top. ive had this issue on my 04 G for the longest time... use to fill at only Shell. just last year i started using a mobil station and at that station i can fill all the way to full.