battery light stays on - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

repda916 · 10-24-2010, 01:10 PM

96 s14
car started acting funny not reving under load.
car dies at stop light have to push it over.
change alternator - battery light still on
new battery- battery light still on

what could the problem be?

Sileighty_85 · 10-24-2010, 01:15 PM

check all fuses

ATLspeed · 10-24-2010, 01:42 PM

- check your alt fuse
- bad/loose ground

Rabboni · 10-24-2010, 02:04 PM

Yea, do what the above people mentioned. Also, check for voltage drop across the wire that goes from the alternator to the battery.

repda916 · 10-24-2010, 02:52 PM

Quote:

Originally Posted by Rabboni

Yea, do what the above people mentioned. Also, check for voltage drop across the wire that goes from the alternator to the battery.

fuses are good. grounds are good. happened randomly. never abuse the car.

Om1kron · 10-24-2010, 04:56 PM

sounds like your charging wire is corroded or has a break in it.

yabeet · 10-24-2010, 05:33 PM

As a rule of thumb:
Voltage drop from the positive battery post to your alternator [@power outlet] should not be more than .3v
Voltage drop from the alternator housing/casing to your negative battery should not be more than .2v
.5 together is max allowable drop between the two.

Edit:

If you do have more v.d than max allowable then these guys are correct, high resistance is bigger v.d is corrosion or a break in the line. Corrosion most likely.

kingston · 10-26-2010, 10:04 PM

Maybe it's karma for ripping people off.

Rabboni · 10-26-2010, 11:36 PM

Quote:

Originally Posted by repda916

fuses are good. grounds are good. happened randomly. never abuse the car.

Did you actually do the voltage drop test, or are you just assuming its good? Do the test and then get back to us.

10-24-2010, 01:10 PM	#1
repda916 Zilvia Addict Join Date: Jun 2008 Location: cali Age: 33 Posts: 999 Trader Rating: (0) Feedback Score: 0 reviews	battery light stays on 96 s14 car started acting funny not reving under load. car dies at stop light have to push it over. change alternator - battery light still on new battery- battery light still on what could the problem be?

10-24-2010, 01:15 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	check all fuses __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

10-24-2010, 01:42 PM	#3
ATLspeed Zilvia Addict Join Date: Jan 2007 Location: Eden, MD, USA Age: 38 Posts: 921 Trader Rating: (14) Rides Gallery: ATLspeed Feedback Score: 14 reviews	- check your alt fuse - bad/loose ground __________________ 93 s13 Vert - 2jz/cd009 -- parted/sold 95 Supra Turbo

10-24-2010, 02:04 PM	#4
Rabboni Zilvia Member Join Date: Aug 2009 Location: Fairfield, CA Posts: 230 Trader Rating: (0) Feedback Score: 0 reviews	Yea, do what the above people mentioned. Also, check for voltage drop across the wire that goes from the alternator to the battery. __________________ Baling Wire-The Duct Tape Of Champions

10-24-2010, 04:56 PM	#6
Om1kron Post Whore! Join Date: Sep 2004 Location: Granada Hills, CA Age: 44 Posts: 6,992 Trader Rating: (15) Feedback Score: 15 reviews	sounds like your charging wire is corroded or has a break in it. __________________ Wayne Edwards https://om1kron.blogspot.com

10-24-2010, 05:33 PM	#7
yabeet Zilvia Member Join Date: Dec 2008 Location: Calgary Posts: 285 Trader Rating: (5) Rides Gallery: yabeet Feedback Score: 5 reviews	As a rule of thumb: Voltage drop from the positive battery post to your alternator [@power outlet] should not be more than .3v Voltage drop from the alternator housing/casing to your negative battery should not be more than .2v .5 together is max allowable drop between the two. Edit: If you do have more v.d than max allowable then these guys are correct, high resistance is bigger v.d is corrosion or a break in the line. Corrosion most likely. __________________ The thing is, it’s a gearbox, okay? It has one job to do! One job! Pull the lever… ‘Am I a pencil? Am I a cauliflower? Am I a nuclear power sta– I’m a gearbox! Oh, heavens, I’m gonna swap some cogs around!’ Jeremy Clarkson on Automatics

10-26-2010, 10:04 PM	#8
kingston Leaky Injector Join Date: Aug 2006 Location: Rowland Heights Posts: 68 Trader Rating: (1) Feedback Score: 1 reviews	Maybe it's karma for ripping people off.