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

upstate240sx · 08-30-2008, 02:14 PM

ok i just did an sr20 swap and id drive around a bit and all of the suddent my radio would cut out, and my dash light for the battery would start blinking the higher i revved it could go out, but at idle it would come on, i charged my battery and it holds a charge, i changed alternators to the ka alternator and it does the same thing, i get a voltage that drops from 12 slowly while the engine is running i think my belt might be the problem, the ribs are beat apart (turns out before my alternator bracket wasnt bolted down) how much play should be in the belt.? i dont hear the belt slipping though, but before is slipped like a mofo

aNskY · 08-30-2008, 02:31 PM

voltage should be in the 14 range while idling if your alternator is good. sounds they are both bad. take them both to autozone, they test alts for free.

a100pureplayaz · 08-30-2008, 02:38 PM

i replaced a alternator and same problem happened if its still occours make sure when you put the key in the on position the batt. light goes on

Massimo Power · 08-30-2008, 03:09 PM

Definetly take it in to autozone to have them test it.. its free.. !

***S14DB*** · 08-30-2008, 03:30 PM

Test the Battery and Alternator.

*swayray* · 08-30-2008, 03:50 PM

check the alternator fuse... i think its the 75amp one.... i blew two of those with the same symptoms...

upstate240sx · 08-30-2008, 09:00 PM

yea i checked that fuse, i got a new belt, my old one had all the ribs completely sheared off, basically what i was doing was using the ka waterpump pulley which has a different offset then the sr20 wp pulley. so that in conjunction with my bracket being loose caused me to chew up belts, ne how i got the new belt and it runs great now, squeals like crazy though, its tensioned im running somewhat of a rigged tensioner setup. if anyone has a oem sr20 w/p pulley ill take it off your hands.

08-30-2008, 02:14 PM	#1
upstate240sx Zilvia Member Join Date: Jun 2008 Location: US Posts: 281 Trader Rating: (3) Feedback Score: 3 reviews	altenator not charging, ok i just did an sr20 swap and id drive around a bit and all of the suddent my radio would cut out, and my dash light for the battery would start blinking the higher i revved it could go out, but at idle it would come on, i charged my battery and it holds a charge, i changed alternators to the ka alternator and it does the same thing, i get a voltage that drops from 12 slowly while the engine is running i think my belt might be the problem, the ribs are beat apart (turns out before my alternator bracket wasnt bolted down) how much play should be in the belt.? i dont hear the belt slipping though, but before is slipped like a mofo

08-30-2008, 03:09 PM	#4
Massimo Power Zilvia Junkie Join Date: Jul 2008 Location: Corona, CA Posts: 322 Trader Rating: (8) Feedback Score: 8 reviews	Definetly take it in to autozone to have them test it.. its free.. ! __________________ www.massimopower.com PH: 1(951)402-5386 EM:[email protected] Special Thanks To: www.aeperformance.com www.domospeed.com/blog For Their Continued Support

08-30-2008, 03:30 PM	#5
*S14DB* AFC #1 Join Date: Oct 2003 Location: 昨晩あなたのお母さんの家 Posts: 20,181 Trader Rating: (3) Feedback Score: 3 reviews	Test the Battery and Alternator. __________________ Comments should be taken as Opinions not as Statements of Fact

08-30-2008, 03:50 PM	#6
swayray Premium Member Join Date: Aug 2005 Location: torrance Posts: 1,017 Trader Rating: (23) Rides Gallery: swayray Feedback Score: 23 reviews	check the alternator fuse... i think its the 75amp one.... i blew two of those with the same symptoms... __________________ http://www.thenismoshop.com

08-30-2008, 02:31 PM	#2
aNskY Nissanaholic! Join Date: Apr 2005 Location: NY Age: 40 Posts: 1,604 Trader Rating: (10) Feedback Score: 10 reviews	voltage should be in the 14 range while idling if your alternator is good. sounds they are both bad. take them both to autozone, they test alts for free.

08-30-2008, 02:38 PM	#3
a100pureplayaz Leaky Injector Join Date: Jun 2007 Location: new york Posts: 68 Trader Rating: (0) Feedback Score: 0 reviews	i replaced a alternator and same problem happened if its still occours make sure when you put the key in the on position the batt. light goes on

08-30-2008, 09:00 PM	#7
upstate240sx Zilvia Member Join Date: Jun 2008 Location: US Posts: 281 Trader Rating: (3) Feedback Score: 3 reviews	yea i checked that fuse, i got a new belt, my old one had all the ribs completely sheared off, basically what i was doing was using the ka waterpump pulley which has a different offset then the sr20 wp pulley. so that in conjunction with my bracket being loose caused me to chew up belts, ne how i got the new belt and it runs great now, squeals like crazy though, its tensioned im running somewhat of a rigged tensioner setup. if anyone has a oem sr20 w/p pulley ill take it off your hands.