S14 alternator problem - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jupiterl · 05-31-2002, 07:00 PM

I have some problem with the alternator on my S14. I start up the car, the voltage on the battery keeps on dropping, and finally stall. What lead to this problem ? Is it just fuse ? Or it's time for a new alternator. But I believe if the engine can start, which means there is no problem with the alternator.

Please advise ASAP. Thanks.

camppain · 05-31-2002, 10:28 PM

the alternator/generator has nothing to do with a car starting its there for the sole purpose of recharging the battery.
if you r voltage on your battery is dropping after recharging it then your alternator is definately at fault here. its not working .

first see if any of the power wires from the alternator are loose or corroded. my buddy replaced 4 alternators on his se-r everytime i told him to see if his wires where good then finally the 5th time he told me he tugged on the wire and it just came off.

so check the easy stuff first <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt='

'> main problem is near your alternator

jupiterl · 06-01-2002, 02:35 AM

I thought alternator work as a starter when the engine is not running. And as a charger as the engine is running. Because it is just a simple electric motor. I check all the wire and nothing is loose. Is there any other possibilities ?

240sxislander · 06-01-2002, 08:03 AM

From what you're explaining, that's a for sure sign that you're alternator is going out. You could try rebuilding it, but you'd probably end up spending more to rebuild it and besides, it's faster if you just replace it. And the alternator is not like a starter, it's job is to keep the battery charged and also supply various electrical components. Hope this little tidbit helps you on your problem.

jupiterl · 06-01-2002, 10:12 AM

Thanks for your advice. Then I am probably not going to replace it because SR swap will be done in 3 weeks, but I just don't want to see my car ... doing nothing on my driveway.  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/eh.gif" border="0" valign="absmiddle" alt=':eh:'>

05-31-2002, 07:00 PM	#1
jupiterl Zilvia Junkie Join Date: Nov 2001 Location: Markham, Ontario Posts: 310 Trader Rating: (0) Feedback Score: 0 reviews	I have some problem with the alternator on my S14. I start up the car, the voltage on the battery keeps on dropping, and finally stall. What lead to this problem ? Is it just fuse ? Or it's time for a new alternator. But I believe if the engine can start, which means there is no problem with the alternator. Please advise ASAP. Thanks. __________________ SR20det redtop, 205hp Stock

05-31-2002, 10:28 PM	#2
camppain Will never get banned... Join Date: Sep 2001 Location: San Diego CA Age: 45 Posts: 1,510 Trader Rating: (0) Feedback Score: 0 reviews	the alternator/generator has nothing to do with a car starting its there for the sole purpose of recharging the battery. if you r voltage on your battery is dropping after recharging it then your alternator is definately at fault here. its not working . first see if any of the power wires from the alternator are loose or corroded. my buddy replaced 4 alternators on his se-r everytime i told him to see if his wires where good then finally the 5th time he told me he tugged on the wire and it just came off. so check the easy stuff first <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt=''> main problem is near your alternator __________________ -=-99 Sentra SE 5 speed-=- -=-95 240 SE 5 speed-=-

06-01-2002, 02:35 AM	#3
jupiterl Zilvia Junkie Join Date: Nov 2001 Location: Markham, Ontario Posts: 310 Trader Rating: (0) Feedback Score: 0 reviews	I thought alternator work as a starter when the engine is not running. And as a charger as the engine is running. Because it is just a simple electric motor. I check all the wire and nothing is loose. Is there any other possibilities ? __________________ SR20det redtop, 205hp Stock

06-01-2002, 10:12 AM	#5
jupiterl Zilvia Junkie Join Date: Nov 2001 Location: Markham, Ontario Posts: 310 Trader Rating: (0) Feedback Score: 0 reviews	Thanks for your advice. Then I am probably not going to replace it because SR swap will be done in 3 weeks, but I just don't want to see my car ... doing nothing on my driveway.  <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/eh.gif" border="0" valign="absmiddle" alt=':eh:'> __________________ SR20det redtop, 205hp Stock

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06-01-2002, 08:03 AM	#4
240sxislander Join Date: May 2002 Posts: 39 Trader Rating: (0) Feedback Score: 0 reviews	From what you're explaining, that's a for sure sign that you're alternator is going out. You could try rebuilding it, but you'd probably end up spending more to rebuild it and besides, it's faster if you just replace it. And the alternator is not like a starter, it's job is to keep the battery charged and also supply various electrical components. Hope this little tidbit helps you on your problem.