Honda Civic Performance - JDM Discussion Engine tech, forced induction, springs, shocks, brakes, tires, etc.

Battery or Alternator?

Old 16-Jul-2006, 09:41 PM
Registered User
Thread Starter
durell_banks's Avatar
Join Date: Jul 2005
Posts: 107
Question Battery or Alternator?

I was driving today when my battery came on. Now, my car is only 3 years old, but I'm running an 800W and 400W amps in the back on my stock OEM battery. Also, when I get my revs high enough, the battery light goes off, but when I continue to drive, it comes back on. The car starts without a hitch, but my dashboard lights are a bit dim, even with my system off. Now, is it my battery that's not charging properly or could it be my alternator? I know, bring my battery to get checked, but I would like some input as to whether or not it could be the alternator. Thanks a lot guys!
durell_banks is offline  
Old 16-Jul-2006, 10:30 PM
Registered User
Join Date: May 2002
Location: Cambridge
Posts: 167
sounds more like a problem with the alternator
Clip a volt meter onto the battery with the car off, you should get 12-13v then start it up and you should get around 14v. Rev the engine a little bit and it should stay steady around 14v

It could also be loose/bad connection somewhere. Check your engine grounds and the connections at the battery and alternator
imported_monsoon is offline  
Old 16-Jul-2006, 11:37 PM
Senior Member
Join Date: Dec 2005
Location: hamilton/burlington
Posts: 479
monsoon is correct, but leave the multi meter on the battery for a minute while the car is running... if the voltage slowly drops your alternator is no good.
imported_weiRtech is offline  
Old 17-Jul-2006, 01:52 AM
Registered User
imported_Team Rukus's Avatar
Join Date: Apr 2002
Location: Moon
Posts: 8,921
imported_Team Rukus is offline  
Old 17-Jul-2006, 02:10 PM
Senior Member
imported_Cablerat's Avatar
Join Date: Dec 2002
Location: Pickering
Posts: 3,984
make sure your belt is on tight too
imported_Cablerat is offline  
Old 17-Jul-2006, 02:41 PM
Senior Member
Join Date: Jan 2006
Posts: 770
wow altenator gone and its only a 03
imported_plzbeleiveit is offline  
Old 17-Jul-2006, 09:55 PM
Registered User
Thread Starter
durell_banks's Avatar
Join Date: Jul 2005
Posts: 107
Yes, I know, it's a bit odd, but I spoke with a few mechs and audio guys, and they each said that it's probably due to me running 2 amps without a capacitor, so it's really taxing the alternator itself, or something along those lines. But I got it replaced, changed my battery as well, so here's hoping less problems. Also looking into getting a cap as well...
durell_banks is offline  
Old 17-Jul-2006, 10:03 PM
Senior Member
Join Date: Mar 2005
Posts: 6,176
it's probably to your 2 amps?

It's definately because of your two amps man.
chris_si98 is offline  
Old 17-Jul-2006, 10:45 PM
Registered User
Thread Starter
durell_banks's Avatar
Join Date: Jul 2005
Posts: 107
Haha, yeah, I know
durell_banks is offline  
Related Topics
Thread Starter
Last Post
Honda Civic Performance - JDM Discussion
04-Aug-2008 06:56 PM
Honda Civic Performance - JDM Discussion
31-Dec-2005 11:19 PM
Honda Civic Performance - JDM Discussion
27-Oct-2005 11:17 AM
Interior - Audio - Security
04-May-2005 09:15 PM
Honda Civic (+ other) Parts/Accessories for Sale or Trade
04-Mar-2004 02:59 AM

Thread Tools
Search this Thread
Quick Reply: Battery or Alternator?

Contact Us - Sitemap - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.