Voltage Meter

pty370z · 01-08-2011, 12:06 PM

Hi guys,

Not sure if this is the right section but I need to ask something that has been bothering me.

My Z's voltage meter sometimes reads 14V and then it drops to 13V, stays there for quite some time, then later on climbs back to 14V... Is it normal that it sometimes reads 13V and other times 14V..??

Do you guys have it steady at 14V all the time..??

I don't have any aftermarket audio or electronics on the car if it helps..

Thank you in advance for your help..

AllForTheCash · 01-08-2011, 01:51 PM

Normal!

Vegitto-kun · 01-08-2011, 01:59 PM

lol sometimes it drops to 11ish and when I come back later its abit past 14

never really understood it

c41006 · 01-08-2011, 02:36 PM

mine tends to stay around 14 but it is perfectly normal to see some fluctuation

wheee! · 01-08-2011, 02:48 PM

14v is 'charging' 11v is under load, 12 v is the 'nominal' voltage....

pty370z · 01-09-2011, 12:17 AM

OK, so nothing to worry about.. I've never seen the voltage go below 13V on my Z... Always between 13V and 14V.. Sometimes a little over 14V..

Thanks for your replies..

Chan Chee Hoe · 01-09-2011, 12:42 AM

For my car,if i did not start for a week,it will goes to 14.2V,dropping back to 13V after a few minutes.

wheee! · 01-09-2011, 10:58 AM

It's all good. If the Alternator is running and working properly it will maintain an above 12v current to the system. If the car is ON but not with the engine running, the load may drop the voltage below 12v. This is normal. With the engine running, the voltage regulator will ensure the battery remains charged and full by 'regulating' the output from the alternator.

joentown · 01-09-2011, 12:54 PM

Mine stays above 12 but vacillates between 12-14

PapoZalsa · 01-09-2011, 03:24 PM

Normal, mine is always in 14V, I was used to 12V in my other cars, even the 350Z I think.

Red__Zed · 01-09-2011, 04:33 PM

Quote:

Originally Posted by PapoZalsa

Normal, mine is always in 14V, I was used to 12V in my other cars, even the 350Z I think.

that's actually kind of odd to always been that high.

PapoZalsa · 01-09-2011, 07:47 PM

Quote:

Originally Posted by Red__Zed

that's actually kind of odd to always been that high.

Has been like that since new. :dunno:

samb03 · 01-09-2011, 11:33 PM

I only have 2100mi on mine, but on start up it is close to 15V and then drops down to 14.4ish

01-08-2011, 12:06 PM	#1 (permalink)
pty370z Track Member Join Date: Apr 2009 Location: Panama City, Panama Posts: 654 Drives: over the speed limit Rep Power: 17	Voltage Meter Hi guys, Not sure if this is the right section but I need to ask something that has been bothering me. My Z's voltage meter sometimes reads 14V and then it drops to 13V, stays there for quite some time, then later on climbs back to 14V... Is it normal that it sometimes reads 13V and other times 14V..?? Do you guys have it steady at 14V all the time..?? I don't have any aftermarket audio or electronics on the car if it helps.. Thank you in advance for your help.. __________________ 2010 Solid Red 370Z * *Touring-Sport-6MT Black Interior Performance:** STILLEN * BERK * UR * MISHIMOTO * K&N * Z1 * ZSPEED * UPREV * DBA Interior: GT-R Red Start/Stop Button * MSA Floor Mats * PW:JDM Exterior: INGS+1 * SEIBON * FUJIMURA * PW:JDM * UAM * KICS * VOLK

01-08-2011, 01:51 PM	#2 (permalink)
AllForTheCash Enthusiast Member Join Date: Sep 2010 Location: NJ Posts: 385 Drives: 370z Rep Power: 15	Normal! __________________ 2010 370z Brilliant Silver/Frost - Touring - Sport - Navigation - 6MT

01-08-2011, 02:48 PM	#5 (permalink)
wheee! A True Z Fanatic Join Date: Sep 2009 Location: Mod Capital of Canada Age: 58 Posts: 7,354 Drives: cars. lots of cars. Rep Power: 40182	14v is 'charging' 11v is under load, 12 v is the 'nominal' voltage.... __________________ H&R / Stillen / Berk / HKS / Swift / Michelin / UpRev / SPC / Amuse Rep / Seibon / Fringe XVO / TWM / more... My Journal

01-09-2011, 12:17 AM	#6 (permalink)
pty370z Track Member Join Date: Apr 2009 Location: Panama City, Panama Posts: 654 Drives: over the speed limit Rep Power: 17	OK, so nothing to worry about.. I've never seen the voltage go below 13V on my Z... Always between 13V and 14V.. Sometimes a little over 14V.. Thanks for your replies.. __________________ 2010 Solid Red 370Z * *Touring-Sport-6MT Black Interior Performance:** STILLEN * BERK * UR * MISHIMOTO * K&N * Z1 * ZSPEED * UPREV * DBA Interior: GT-R Red Start/Stop Button * MSA Floor Mats * PW:JDM Exterior: INGS+1 * SEIBON * FUJIMURA * PW:JDM * UAM * KICS * VOLK

01-09-2011, 10:58 AM	#8 (permalink)
wheee! A True Z Fanatic Join Date: Sep 2009 Location: Mod Capital of Canada Age: 58 Posts: 7,354 Drives: cars. lots of cars. Rep Power: 40182	It's all good. If the Alternator is running and working properly it will maintain an above 12v current to the system. If the car is ON but not with the engine running, the load may drop the voltage below 12v. This is normal. With the engine running, the voltage regulator will ensure the battery remains charged and full by 'regulating' the output from the alternator. __________________ H&R / Stillen / Berk / HKS / Swift / Michelin / UpRev / SPC / Amuse Rep / Seibon / Fringe XVO / TWM / more... My Journal

01-08-2011, 01:59 PM	#3 (permalink)
Vegitto-kun A True Z Fanatic Join Date: Feb 2010 Location: USA Posts: 2,011 Drives: 09 370Z Rep Power: 263	lol sometimes it drops to 11ish and when I come back later its abit past 14 never really understood it

01-08-2011, 02:36 PM	#4 (permalink)
c41006 A True Z Fanatic Join Date: Oct 2010 Location: Atlanta Posts: 9,034 Drives: '10 G37 Coupe BO 7AT Rep Power: 114	mine tends to stay around 14 but it is perfectly normal to see some fluctuation

01-09-2011, 12:42 AM	#7 (permalink)
Chan Chee Hoe Track Member Join Date: Mar 2009 Location: Singapore Posts: 861 Drives: 370z,Yellow,7sp A Rep Power: 18	For my car,if i did not start for a week,it will goes to 14.2V,dropping back to 13V after a few minutes.

01-09-2011, 12:54 PM	#9 (permalink)
joentown Base Member Join Date: Jan 2009 Location: Philly, PA Posts: 70 Drives: 370Z '10 Tour Sport Rep Power: 17	Mine stays above 12 but vacillates between 12-14

01-09-2011, 03:24 PM	#10 (permalink)
PapoZalsa A True Z Fanatic Join Date: Nov 2009 Location: Not in Sunny Florida Posts: 6,358 Drives: 16 Nismo w/Tech Pack Rep Power: 4500	Normal, mine is always in 14V, I was used to 12V in my other cars, even the 350Z I think. __________________ 2009 370Z MB Base w/Sport Package 6MT Modshack's Custom Air Intakes /3M Clear Bra/ Illuminated Kick Plates / F. I CBE w/12" resonators / EVO-R Front Lip / Rear Hatch Wing / Tein S-Tech Springs /Ilegal Tint in the Rep. of VA/4x20mm Z1 Spacers/ Vinyl Roof/Liquid Carbon Designs

01-09-2011, 11:33 PM	#13 (permalink)
samb03 Base Member Join Date: Nov 2010 Location: western Oklahoma Posts: 164 Drives: Black Cherry Sport Rep Power: 15	I only have 2100mi on mine, but on start up it is close to 15V and then drops down to 14.4ish

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