Ka24e alt not charging - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

ixNismoKidxi · 12-20-2012, 11:51 AM

Anyone know what the problem is ? I noticed if I take off the tiny ground that charges my alternator it doesn't spark , even when the 75a fuse is plugged in . 240sx alternator problem - YouTube.

cotbu · 12-20-2012, 11:03 PM

wtf........!

EhrikETFG · 12-20-2012, 11:07 PM

hey maybe the alternator is bad if it doesnt charge

*wangan_cruiser* · 12-23-2012, 04:39 AM

Check all plugs

Guilty1s · 12-23-2012, 07:41 AM

Does the Battery light in your dash come on when the motor is off, ignition on.
If so, does it go off when the motor is started?

ronny.jpn · 12-23-2012, 08:44 PM

wtf is this witchcraft!??!

ixNismoKidxi · 12-24-2012, 10:56 AM

the battery light stays on but i think its because i dont have the tiny alternator ground plugged. the only way for me to have power dash/electronics is if i have it disconnected , because once i connect that tiny alternator ground i blow a fuse.and im pretty sure that tiny alternator ground is supposed to charge my alt. i have no idea how to fix it.

cotbu · 12-24-2012, 11:44 AM

Quote:

I noticed if I take off the tiny ground that charges my alternator

Quote:

im pretty sure that tiny alternator ground is supposed to charge my alt

Google how an alternator works please! Before you hurt yourself or others!

Guilty1s · 12-24-2012, 12:07 PM

The ground doesn't charge the alternator but ill explain how it is important.

You have 4 "terminals" at your alternator.

-You have your main hot that feeds the battery and electrical system
-You have you ground which is done through motor/chassis (not a terminal, I know)

Then you have a 2 pin plug on it.
-One of them (yellow IIRC) is for your voltage regulator. It sees 12+ source voltage from the battery and tells it when to turn on, if it needs to turn on.
-The other outputs a ground (white/red IIRC) that completes a circuit in the dashboard at the battery light with a 12v fused source on the other side of the bulb. I don't know how or why, but I know it is fact, but if that circuit is not completed, the alternator will not charge.

Normal operating is:
When the car is off, but ignition is on, alternator not spinning. Alternator outputs the ground and your battery light is on.

If the motor is running, alternator is spinning, and the ground circuit is connected... the light should go off.

An instance where you break an alternator belt, engine is running but alternator not spinning, the light would come on to show malfunction.

If there is a break in that circuit, The alternator will not charge and the battery light will not be on regardless. It only has a 12v hot going to it with no ground source.

The light is there to detect malfunctions. Your light is working so it can only be 2 things *assuming it grounded)

-You have a break in your voltage regulator wire. Could be a blown fuse
-Your alternator just not charging anymore.

Guilty1s · 12-24-2012, 12:13 PM

Quote:

Originally Posted by ixNismoKidxi

the battery light stays on but i think its because i dont have the tiny alternator ground plugged. the only way for me to have power dash/electronics is if i have it disconnected , because once i connect that tiny alternator ground i blow a fuse.and im pretty sure that tiny alternator ground is supposed to charge my alt. i have no idea how to fix it.

I think it is the voltage regulator wire that you are disconnecting since your battery light is staying on. It is fused and it is required to charge your alternator.

If it was me, I would but 12v from the battery (preferably fused to the voltage regulator wire. If your system gets 14v while running, you have a fault in your wiring.

If it blows the fuse, I would think that the alternator is overcharging or shot.

ixNismoKidxi · 12-24-2012, 01:05 PM

Quote:

Originally Posted by Guilty1s

I think it is the voltage regulator wire that you are disconnecting since your battery light is staying on. It is fused and it is required to charge your alternator.

If it was me, I would but 12v from the battery (preferably fused to the voltage regulator wire. If your system gets 14v while running, you have a fault in your wiring.

If it blows the fuse, I would think that the alternator is overcharging or shot.

thanks bro, ill head out and buy a new alt today. Merry Christmas!

ixNismoKidxi · 12-29-2012, 06:48 PM

So i replaced my alternator and im still blowing fuses! kinda in a stump.

ronny.jpn · 12-29-2012, 10:45 PM

Is the little rubber insolator on the alternator where the hot wire goes?

mulinjohe · 12-29-2012, 11:22 PM

i blow a fuse.and im pretty sure that tiny alternator ground is supposed to charge my alt.

ixNismoKidxi · 12-30-2012, 06:08 AM

yeah the plastic insulator is still in tact

ronny.jpn · 12-30-2012, 06:42 AM

make sure you have the little ground on

ixNismoKidxi · 12-30-2012, 11:49 AM

I have it on but my battery sparks when I connect the negative terminal. When I don't have it plugged on no popping fuses or sparks

BoostSlideWayz · 12-30-2012, 12:08 PM

Im actually not sure why you took out a fuse to the alt and then connected it.. When you take that fuse out. your instantly open circuit and have no connectivity between the alt and the battery even when the cables are connected... Obviously if there is a spark coming from the terminal there is some sort of charge coming from the cable... Also are you sure your battery is not bad ? On my s13 ka24e-t my battery is so dead that even after i drive a couple miles it wont hold a charge.. some batteries will just not hold a charge for longer than a couple hours..

ixNismoKidxi · 01-01-2013, 05:07 PM

i just wanted to confirm if the tiny ground on the alternator is Alt-Body Ground?

12-20-2012, 11:51 AM	#1
ixNismoKidxi Join Date: Apr 2012 Location: Lathrop Age: 31 Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	Ka24e alt not charging Anyone know what the problem is ? I noticed if I take off the tiny ground that charges my alternator it doesn't spark , even when the 75a fuse is plugged in . 240sx alternator problem - YouTube.

12-20-2012, 11:03 PM	#2
cotbu Post Whore! Join Date: Sep 2005 Location: SWFL Age: 50 Posts: 3,318 Trader Rating: (3) Feedback Score: 3 reviews	*wtf........!* __________________ LoverTechnologies "Half Broken Things!"

12-30-2012, 12:08 PM	#18
BoostSlideWayz Nissanaholic! Join Date: Sep 2008 Location: Lebec Age: 35 Posts: 1,686 Trader Rating: (1) Feedback Score: 1 reviews	Im actually not sure why you took out a fuse to the alt and then connected it.. When you take that fuse out. your instantly open circuit and have no connectivity between the alt and the battery even when the cables are connected... Obviously if there is a spark coming from the terminal there is some sort of charge coming from the cable... Also are you sure your battery is not bad ? On my s13 ka24e-t my battery is so dead that even after i drive a couple miles it wont hold a charge.. some batteries will just not hold a charge for longer than a couple hours.. __________________ 1994 toyota supra...... n-a D= 1992 nissan 240sx KA24E-T fully Built =D

12-20-2012, 11:07 PM	#3
EhrikETFG Zilvia Addict Join Date: Aug 2009 Location: Lancaster, PA Posts: 689 Trader Rating: (0) Feedback Score: 0 reviews	hey maybe the alternator is bad if it doesnt charge

12-23-2012, 04:39 AM	#4
wangan_cruiser kouki man Join Date: Apr 2006 Location: downtown oakland,ca Age: 40 Posts: 3,539 Trader Rating: (36) Feedback Score: 36 reviews	Check all plugs

12-23-2012, 07:41 AM	#5
Guilty1s Zilvia Member Join Date: Sep 2011 Location: Knoxville, TN Age: 36 Posts: 263 Trader Rating: (1) Feedback Score: 1 reviews	Does the Battery light in your dash come on when the motor is off, ignition on. If so, does it go off when the motor is started?

12-23-2012, 08:44 PM	#6
ronny.jpn Zilvia Junkie Join Date: Apr 2012 Location: Mobile, Al Age: 30 Posts: 325 Trader Rating: (0) Feedback Score: 0 reviews	wtf is this witchcraft!??!

12-24-2012, 10:56 AM	#7
ixNismoKidxi Join Date: Apr 2012 Location: Lathrop Age: 31 Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	the battery light stays on but i think its because i dont have the tiny alternator ground plugged. the only way for me to have power dash/electronics is if i have it disconnected , because once i connect that tiny alternator ground i blow a fuse.and im pretty sure that tiny alternator ground is supposed to charge my alt. i have no idea how to fix it.

12-24-2012, 12:07 PM	#9
Guilty1s Zilvia Member Join Date: Sep 2011 Location: Knoxville, TN Age: 36 Posts: 263 Trader Rating: (1) Feedback Score: 1 reviews	The ground doesn't charge the alternator but ill explain how it is important. You have 4 "terminals" at your alternator. -You have your main hot that feeds the battery and electrical system -You have you ground which is done through motor/chassis (not a terminal, I know) Then you have a 2 pin plug on it. -One of them (yellow IIRC) is for your voltage regulator. It sees 12+ source voltage from the battery and tells it when to turn on, if it needs to turn on. -The other outputs a ground (white/red IIRC) that completes a circuit in the dashboard at the battery light with a 12v fused source on the other side of the bulb. I don't know how or why, but I know it is fact, but if that circuit is not completed, the alternator will not charge. Normal operating is: When the car is off, but ignition is on, alternator not spinning. Alternator outputs the ground and your battery light is on. If the motor is running, alternator is spinning, and the ground circuit is connected... the light should go off. An instance where you break an alternator belt, engine is running but alternator not spinning, the light would come on to show malfunction. If there is a break in that circuit, The alternator will not charge and the battery light will not be on regardless. It only has a 12v hot going to it with no ground source. The light is there to detect malfunctions. Your light is working so it can only be 2 things *assuming it grounded) -You have a break in your voltage regulator wire. Could be a blown fuse -Your alternator just not charging anymore.

12-29-2012, 06:48 PM	#12
ixNismoKidxi Join Date: Apr 2012 Location: Lathrop Age: 31 Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	So i replaced my alternator and im still blowing fuses! kinda in a stump.

12-29-2012, 10:45 PM	#13
ronny.jpn Zilvia Junkie Join Date: Apr 2012 Location: Mobile, Al Age: 30 Posts: 325 Trader Rating: (0) Feedback Score: 0 reviews	Is the little rubber insolator on the alternator where the hot wire goes?

12-29-2012, 11:22 PM	#14
mulinjohe Join Date: Dec 2012 Location: new york Age: 39 Posts: 8 Trader Rating: (0) Feedback Score: 0 reviews	i blow a fuse.and im pretty sure that tiny alternator ground is supposed to charge my alt.

12-30-2012, 06:08 AM	#15
ixNismoKidxi Join Date: Apr 2012 Location: Lathrop Age: 31 Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	yeah the plastic insulator is still in tact

12-30-2012, 06:42 AM	#16
ronny.jpn Zilvia Junkie Join Date: Apr 2012 Location: Mobile, Al Age: 30 Posts: 325 Trader Rating: (0) Feedback Score: 0 reviews	make sure you have the little ground on

12-30-2012, 11:49 AM	#17
ixNismoKidxi Join Date: Apr 2012 Location: Lathrop Age: 31 Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	I have it on but my battery sparks when I connect the negative terminal. When I don't have it plugged on no popping fuses or sparks

01-01-2013, 05:07 PM	#19
ixNismoKidxi Join Date: Apr 2012 Location: Lathrop Age: 31 Posts: 14 Trader Rating: (0) Feedback Score: 0 reviews	i just wanted to confirm if the tiny ground on the alternator is Alt-Body Ground?