FUEL GAUGE READINGS HELP!!!!! ... '11 Nismo

DBZnismo · 01-03-2016, 10:50 PM

So i know there are many threads behind the inaccuracy of the fuel gauge on z34s but i only keep finding threads from years ago. My point being is that i want to hear some more recent responses from the community.

OKAY THEN, so last night i was driving around with my buddies (my nismo had half a tank of gas) so we drive pretty fast when we're all cruising together, did a few outruns here and there. So we decide to head to my friends house so we caravan our way over there.
WE COME to this turn and everybody hits it pretty fast, when i go to hit this LEFT HAND TURN i pressed on the gas (all of the assists were turned off) and my throttle stops midway through the turn, my revs drop, but then responded back normally in a fraction of a second. I was clueless on what had just happened and i was 5 houses away from my buddy's pad so i parked the car there and didnt turn her back on untill about 4 hours later.
ONCE i fired up the engine, all of my fuel dots were off and then the YELLOW TRIANGLE LIGHT with the exclamation mark (!) appeared. Then the screen below the fuel gauge started reading LOW FUEL with XXmiles left. I rushed to the gas station and filled her up untill the pump stopped (by the amount of fuel i pumped i could tell my gas tank was still roughly around halfway prior to refuel) still continued with the traingle light and low fuel warning. This morning it was the samething, went on a drive for about 10 mins still no change. Fired her up once more before bed and it continues. The tank is obviously full, the traingle ! light continues to be there, NONE of my fuel dots light up and the Low Fuel warning continues to peep every time i start the engine.

WHAT IS THIS WITCHERY!?!! PLEASE HELP

DONT WANT TO GO TO THE STEALERSHIP!

I drive a 2011 Nismo with 40k miles...

Memphis370Z · 01-03-2016, 10:56 PM

Have you scanned it and, if so, did you find any codes?

DBZnismo · 01-03-2016, 11:00 PM

I have not sir.

DBZnismo · 01-03-2016, 11:02 PM

Other threads have talked about FUEL STARVATION due to a fast turn and having the fuel shift to one side of the tank...

Memphis370Z · 01-03-2016, 11:06 PM

Indeed, but given your description (left hand turn), I was thinking it might be something else. I always start by looking for codes. If nothing else, codes (or the lack thereof) may help rule out particular issues.

DBZnismo · 01-03-2016, 11:13 PM

Yes, that is next step then. I will post codes tomorrow evening

Spooler · 01-03-2016, 11:37 PM

Sounds like you had 2 issues. First one is a fuel starvation issue that caused the stumble. The next is one of your fuel senders has taken a crap causing it not to read any fuel on your gauge. Yes, you have 2 fuel senders, one fuel sender for each side of the tank.

DBZnismo · 01-04-2016, 07:23 AM

Taken a crap?! Does that mean it needs to be replaced? -.-

SouthArk370Z · 01-04-2016, 08:28 AM

Quote:

Originally Posted by DBZnismo

Taken a crap?! Does that mean it needs to be replaced? -.-

If it has, in fact, crapped out, then yes.

DBZnismo · 01-04-2016, 08:36 AM

F#$& man.. She drove like a charm to work today (35 mile trip) I even launched her at a light and went a steady 100mph for about 5 mins on the highway. Still no fuel gauge dots, warning light on

__________________
Fairlady Z Nismo!!

2011 Nismo#91 · 01-04-2016, 09:43 AM

If it's a full tank and still reading empty yeah, fuel sending unit dead. Nissan's whole fuel tank systems in general are pretty bad.

DBZnismo · 01-04-2016, 09:56 AM

What exactly does that unit do? Does it just read the fuel level or literally what it's name implies? This is horesh!t, i just had the whole steering lock problem last month, now this crap, smfh.

SouthArk370Z · 01-04-2016, 10:21 AM

Quote:

Originally Posted by DBZnismo

What exactly does that unit do? Does it just read the fuel level or literally what it's name implies? This is horesh!t, i just had the whole steering lock problem last month, now this crap, smfh.

It sends a signal, proportional to tank level, to either the ECM or BCM (details are in the FSM, if you are curious).

barncobob · 01-04-2016, 11:00 AM

sometimes unhooking the battery can solve many ills, cheap fix if it works

Hemingway · 01-04-2016, 09:44 PM

This is an old nissan problem. MY 04 G35 had this issue. As others have stated, it is most likely the fuel sending unit(s) in the gas tank.

01-03-2016, 10:50 PM	#1 (permalink)
DBZnismo Base Member Join Date: Aug 2015 Location: Phoenix, AZ Posts: 10 Drives: 370z Nismo Rep Power: 9	FUEL GAUGE READINGS HELP!!!!! ... '11 Nismo So i know there are many threads behind the inaccuracy of the fuel gauge on z34s but i only keep finding threads from years ago. My point being is that i want to hear some more recent responses from the community. OKAY THEN, so last night i was driving around with my buddies (my nismo had half a tank of gas) so we drive pretty fast when we're all cruising together, did a few outruns here and there. So we decide to head to my friends house so we caravan our way over there. WE COME to this turn and everybody hits it pretty fast, when i go to hit this LEFT HAND TURN i pressed on the gas (all of the assists were turned off) and my throttle stops midway through the turn, my revs drop, but then responded back normally in a fraction of a second. I was clueless on what had just happened and i was 5 houses away from my buddy's pad so i parked the car there and didnt turn her back on untill about 4 hours later. ONCE i fired up the engine, all of my fuel dots were off and then the YELLOW TRIANGLE LIGHT with the exclamation mark (!) appeared. Then the screen below the fuel gauge started reading LOW FUEL with XXmiles left. I rushed to the gas station and filled her up untill the pump stopped (by the amount of fuel i pumped i could tell my gas tank was still roughly around halfway prior to refuel) still continued with the traingle light and low fuel warning. This morning it was the samething, went on a drive for about 10 mins still no change. Fired her up once more before bed and it continues. The tank is obviously full, the traingle ! light continues to be there, NONE of my fuel dots light up and the Low Fuel warning continues to peep every time i start the engine. WHAT IS THIS WITCHERY!?!! PLEASE HELP DONT WANT TO GO TO THE STEALERSHIP! I drive a 2011 Nismo with 40k miles... __________________ Fairlady Z Nismo!!

01-03-2016, 11:00 PM	#3 (permalink)
DBZnismo Base Member Join Date: Aug 2015 Location: Phoenix, AZ Posts: 10 Drives: 370z Nismo Rep Power: 9	I have not sir. __________________ Fairlady Z Nismo!!

01-03-2016, 11:02 PM	#4 (permalink)
DBZnismo Base Member Join Date: Aug 2015 Location: Phoenix, AZ Posts: 10 Drives: 370z Nismo Rep Power: 9	Other threads have talked about FUEL STARVATION due to a fast turn and having the fuel shift to one side of the tank... __________________ Fairlady Z Nismo!!

01-03-2016, 11:13 PM	#6 (permalink)
DBZnismo Base Member Join Date: Aug 2015 Location: Phoenix, AZ Posts: 10 Drives: 370z Nismo Rep Power: 9	Yes, that is next step then. I will post codes tomorrow evening __________________ Fairlady Z Nismo!!

01-03-2016, 11:37 PM	#7 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,503 Drives: 2013 Nismo 370z Rep Power: 2684391	Sounds like you had 2 issues. First one is a fuel starvation issue that caused the stumble. The next is one of your fuel senders has taken a crap causing it not to read any fuel on your gauge. Yes, you have 2 fuel senders, one fuel sender for each side of the tank. SouthArk370Z and Memphis370Z like this.

01-03-2016, 10:56 PM	#2 (permalink)
Memphis370Z A True Z Fanatic Join Date: Sep 2014 Location: Memphis Area Posts: 3,117 Drives: '09 MB Rep Power: 124433	Have you scanned it and, if so, did you find any codes?

01-03-2016, 11:06 PM	#5 (permalink)
Memphis370Z A True Z Fanatic Join Date: Sep 2014 Location: Memphis Area Posts: 3,117 Drives: '09 MB Rep Power: 124433	Indeed, but given your description (left hand turn), I was thinking it might be something else. I always start by looking for codes. If nothing else, codes (or the lack thereof) may help rule out particular issues.

01-04-2016, 07:23 AM	#8 (permalink)
DBZnismo Base Member Join Date: Aug 2015 Location: Phoenix, AZ Posts: 10 Drives: 370z Nismo Rep Power: 9	Taken a crap?! Does that mean it needs to be replaced? -.- __________________ Fairlady Z Nismo!!

01-04-2016, 08:36 AM	#10 (permalink)
DBZnismo Base Member Join Date: Aug 2015 Location: Phoenix, AZ Posts: 10 Drives: 370z Nismo Rep Power: 9	F#$& man.. She drove like a charm to work today (35 mile trip) I even launched her at a light and went a steady 100mph for about 5 mins on the highway. Still no fuel gauge dots, warning light on __________________ Fairlady Z Nismo!!

01-04-2016, 09:43 AM	#11 (permalink)
2011 Nismo#91 A True Z Fanatic Join Date: Mar 2011 Location: NJ Posts: 2,379 Drives: slowly Rep Power: 33858	If it's a full tank and still reading empty yeah, fuel sending unit dead. Nissan's whole fuel tank systems in general are pretty bad. DBZnismo likes this.

01-04-2016, 09:56 AM	#12 (permalink)
DBZnismo Base Member Join Date: Aug 2015 Location: Phoenix, AZ Posts: 10 Drives: 370z Nismo Rep Power: 9	What exactly does that unit do? Does it just read the fuel level or literally what it's name implies? This is horesh!t, i just had the whole steering lock problem last month, now this crap, smfh. __________________ Fairlady Z Nismo!!

01-04-2016, 11:00 AM	#14 (permalink)
barncobob A True Z Fanatic Join Date: Sep 2015 Location: hangtown, CA Posts: 1,164 Drives: 16 370Z auto Rep Power: 589	sometimes unhooking the battery can solve many ills, cheap fix if it works DBZnismo likes this.

01-04-2016, 09:44 PM	#15 (permalink)
Hemingway Base Member Join Date: Oct 2015 Location: Jersey Posts: 24 Drives: 2013NISMO#707 Rep Power: 9	This is an old nissan problem. MY 04 G35 had this issue. As others have stated, it is most likely the fuel sending unit(s) in the gas tank.

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