alternator question

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Old 10-01-2008, 02:51 PM
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alternator question

today i was driving home from school and while driving at any speed my afc neo reads teh battery voltage, its at 13.9v-14.1v which is right where it should be. now while stopped at a red light it read 12.2v-12.4v . the cars not acting up or anything. is their is a problem with my alternator or battery? this is the first time it has happened to me.
Old 10-01-2008, 04:29 PM
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Thats completely normal. Nothing is wrong.
Old 10-01-2008, 04:35 PM
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well think about it. your engine is spinning slower so your alt is spinning slower. obviously you're gonna have a lower voltage. if you want it to be consistent, might want to consider the big3 upgrade.
Old 10-01-2008, 09:04 PM
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but this has never happened to me before. i have a sound system with a capacitor
rp_guy- whats the big3 upgrade?
Old 10-01-2008, 09:15 PM
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Originally Posted by Rajca
but this has never happened to me before. i have a sound system with a capacitor
rp_guy- whats the big3 upgrade?
Or have you never noticed? It should drop some at idle. Mine is/has always been in the 13.8-9 range driving idling its 12.4 just like yours.
Old 10-01-2008, 09:22 PM
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alright than i guess its normal, id just guess that for last 6 months that i had the neo id notice it, i guess not.
Old 10-02-2008, 01:04 PM
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http://www.the12volt.com/installbay/...TID~73496~PN~1

IMO everyone should do it. there's some posts in the audio/video section here too of a TSX's idle voltage that went from 11-12v just from the big 3
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