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battery light comes on after changing new alternator

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Old 12-01-2013, 04:04 PM
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Default battery light comes on after changing new alternator

I have a 92 honda civic hatchback si. my battery light came up on the cluster yesterday so I figure it would be the alternator. I pull out the multimeter check for voltage, battery reads 12v with the car off & with the car on it should be holding charge at 14v but it didnt, it stay at 12v. I change the alternator and check for voltage with the car on its at 14v so everything running fine. No more battery light come up on the cluster but when i turn it off the battery light comes on and turns off right away? Whats the problem can that be? Can it be a defective alternator?
Old 12-01-2013, 05:11 PM
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Default Re: battery light comes on after changing new alternator

Originally Posted by wing.jai
when i turn it off the battery light comes on and turns off right away?
I don't understand. More details?
Old 12-01-2013, 06:40 PM
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Default Re: battery light comes on after changing new alternator

Originally Posted by RonJ@HT
I don't understand. More details?

when the car is on and running, the battery light doesn't come on anymore. but when you turn it off to ignition on to off and pull the key out. the battery light flickers on n off right away.
Old 12-01-2013, 06:41 PM
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Default Re: battery light comes on after changing new alternator

Might be an ignition switch issue.
Old 12-01-2013, 06:46 PM
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Default Re: battery light comes on after changing new alternator

when i was driving the car today battery light came and it was flickering like crazy so i pull over it stop. but now when i put the key on ignition on the battery light doesnt show on the cluster no more. so i thought the bulb went out. but when i turn the key to off position i see the battery light flicker on and off
Old 12-02-2013, 08:04 PM
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Default Re: battery light comes on after changing new alternator

help a buddy out!

Last edited by weaksoN!; 12-02-2013 at 08:33 PM.
Old 12-10-2013, 07:58 PM
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Default Re: battery light comes on after changing new alternator

swap a new alternator. and it still does the same thing.
Old 12-10-2013, 08:00 PM
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Default Re: battery light comes on after changing new alternator

Originally Posted by wing.jai
swap a new alternator. and it still does the same thing.
The best strategy is to continue to replace parts until the problem is fixed. Avoid doing any diagnostic testing as long as possible, or until money runs out.
Old 12-10-2013, 08:13 PM
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Default Re: battery light comes on after changing new alternator

alternator was under warranty. i thought it was a defective alternator. do you have any suggestion where i should check?
Old 12-10-2013, 08:14 PM
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Default Re: battery light comes on after changing new alternator

Originally Posted by wing.jai
do you have any suggestion where i should check?
Haha...no, none whatsoever. This is my first post in this thread.
Old 12-11-2013, 11:07 PM
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Default Re: battery light comes on after changing new alternator

First off, check that all your grounds at/near the battery/alternator are clean and tight (to factory spec). secondly, check that your alternator belt is tensioned properly. thirdly, just for ***** and giggles, clear your ecu of any persistent stored codes. then see where you are with the problem.
Old 12-23-2013, 07:16 PM
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Default Re: battery light comes on after changing new alternator

Originally Posted by RonJ@HT
Haha...no, none whatsoever. This is my first post in this thread.
sigh... im just driving it the way is it. so far no problem of it shutting off or dieing. everything reads to spec
Old 12-26-2013, 01:22 AM
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Default Re: battery light comes on after changing new alternator

Have a shop diagnose it for you then fix it yourself if you can.
Old 12-29-2013, 05:29 PM
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Default Re: battery light comes on after changing new alternator

Originally Posted by jmaze
Have a shop diagnose it for you then fix it yourself if you can.
At ~$90 an hour for labor, that sounds like a bad idea. Since the issue is with the key off, sounds like an ignition switch issue to me.
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