Starter and alternator Draining batt. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

OoAtreyuloO · 12-22-2011, 09:59 PM

Ok so im stumped and I have checked all previous possibilities.

Like the title states the Starter, alternator, battery fuses (kick panel) , and fuses in the main fuse box. all show on with a tester when the car is off.

This started happening all of a sudden.

Ive checked the ECU by disconnecting it and it still stayed on.

so than i removed my my ignition switch and it still stayed on....

cars stock i have no clue what it could be.

New ground cable and alternator and starter and batt.

some one shed some light im tired of disconnecting the batt.

Sileighty_85 · 12-22-2011, 10:20 PM

So Your getting 12V at the big wires on the alt and battery? .....Thats normal

OoAtreyuloO · 12-22-2011, 10:25 PM

12v while the car is off is normal?

Sileighty_85 · 12-22-2011, 10:31 PM

youp those wires are connected directly to the battery

EsChassisLove · 12-22-2011, 10:34 PM

around 12V while its off is normal.

Check grounds?

Fuck electricity.

rcdad123 · 12-23-2011, 10:53 AM

so is it actually draining the battery? if you have a drain, do a parasitic drain test. hook up your voltmeter test leads according to the manufacturer`s manual and then start pulling fuses one by one until the drain goes down or completely gone. if you pull the radio fuse out and the drain goes down, the drain is somewhere in that circuit. but on the older cars, a few circuit uses the same fuse. so it might not just be the radio. you have to look on the FSM and see what circuits use what fuses. also, a little drain is normal due to clock, radio memory, etc. but if you have more than .035 amp, something is staying on. newer cars can draw twice as much as that due to all kinds of computers in them. good luck.

OoAtreyuloO · 12-23-2011, 11:38 AM

Thanx ill recheck it today ... I just gad the impression,that all components turned off when a car is switched off

12-22-2011, 09:59 PM	#1
OoAtreyuloO Zilvia Junkie Join Date: Feb 2011 Location: Compton Age: 35 Posts: 340 Trader Rating: (1) Feedback Score: 1 reviews	Starter and alternator Draining batt. Ok so im stumped and I have checked all previous possibilities. Like the title states the Starter, alternator, battery fuses (kick panel) , and fuses in the main fuse box. all show on with a tester when the car is off. This started happening all of a sudden. Ive checked the ECU by disconnecting it and it still stayed on. so than i removed my my ignition switch and it still stayed on.... cars stock i have no clue what it could be. New ground cable and alternator and starter and batt. some one shed some light im tired of disconnecting the batt.

12-22-2011, 10:20 PM	#2
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	So Your getting 12V at the big wires on the alt and battery? .....Thats normal __________________ 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

12-22-2011, 10:31 PM	#4
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	youp those wires are connected directly to the battery __________________ 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

12-22-2011, 10:34 PM	#5
EsChassisLove Nissanaholic! Join Date: Jan 2011 Location: San Diego Age: 36 Posts: 2,090 Trader Rating: (26) Feedback Score: 26 reviews	around 12V while its off is normal. Check grounds? Fuck electricity. __________________ IG/TikTok-ThatS14_Z06guy

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12-22-2011, 10:25 PM	#3
OoAtreyuloO Zilvia Junkie Join Date: Feb 2011 Location: Compton Age: 35 Posts: 340 Trader Rating: (1) Feedback Score: 1 reviews	12v while the car is off is normal?

12-23-2011, 10:53 AM	#6
rcdad123 Zilvia Addict Join Date: Jul 2011 Location: san diego Posts: 639 Trader Rating: (0) Feedback Score: 0 reviews	so is it actually draining the battery? if you have a drain, do a parasitic drain test. hook up your voltmeter test leads according to the manufacturer`s manual and then start pulling fuses one by one until the drain goes down or completely gone. if you pull the radio fuse out and the drain goes down, the drain is somewhere in that circuit. but on the older cars, a few circuit uses the same fuse. so it might not just be the radio. you have to look on the FSM and see what circuits use what fuses. also, a little drain is normal due to clock, radio memory, etc. but if you have more than .035 amp, something is staying on. newer cars can draw twice as much as that due to all kinds of computers in them. good luck.

12-23-2011, 11:38 AM	#7
OoAtreyuloO Zilvia Junkie Join Date: Feb 2011 Location: Compton Age: 35 Posts: 340 Trader Rating: (1) Feedback Score: 1 reviews	Thanx ill recheck it today ... I just gad the impression,that all components turned off when a car is switched off