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Old 12-30-2011, 04:36 PM   #1
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Default 92 civic si -- blinking battery light

ok this is getting really annoying the car drives and runs starts perfect the battery is new the alternator is new there is nothing wrong no problems but the dam battery light keeps blinking and i can hear somthing under the hood every time it blinks.. it blinks about every second for a peroid of time.. if i press the gas or brake it goes away and then comes back when i let go.. its just annoying theres nothing wrong with the car but i cant stand it anymore
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Old 12-30-2011, 04:49 PM   #2
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Default Re: blinking battery light

Is the battery secure? Terminals tight?
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Old 12-30-2011, 05:01 PM   #3
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Default Re: blinking battery light

Get your alternator checked out.
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Old 12-30-2011, 05:16 PM   #4
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Default Re: blinking battery light

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Originally Posted by hannslebo View Post
Is the battery secure? Terminals tight?
Im gonna go with this one ^^^^ or a loose belt cuz you mentioned when you press on the gas. check you your batt terminals and check the 10mm nut on the alternator to ensure its tight as well
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Old 12-30-2011, 05:32 PM   #5
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Default Re: blinking battery light

Lol could your alt be loose? Doubt it but hell with a check while you are in there. It could also be your sense circuit lines check that your plug is secure. Good luck
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Old 12-30-2011, 05:35 PM   #6
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Default Re: blinking battery light

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Get your alternator checked out.
+1 it's your alternator
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Old 12-30-2011, 05:51 PM   #7
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Default Re: blinking battery light

He said both the batt and the alt are new so it has to be a loose connection somwhere.
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Old 12-30-2011, 05:55 PM   #8
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Default Re: blinking battery light

I've seen supposedly "new" alternators actually be bad out of the box.
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Old 12-30-2011, 05:58 PM   #9
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Default Re: blinking battery light

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I've seen supposedly "new" alternators actually be bad out of the box.
You are so right, but I would start with the basics first before you pull it back out thats all im sayin
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Old 12-30-2011, 06:17 PM   #10
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Default Re: blinking battery light

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I've seen supposedly "new" alternators actually be bad out of the box.
yup! happened to me 3 months ago take it out and get it tested at autozone
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Old 12-30-2011, 08:04 PM   #11
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Default Re: blinking battery light

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yup! happened to me 3 months ago take it out and get it tested at autozone
yeah it has happened to me as well with a starter I got from Autozone and an alternator from napa. its hit or miss sometimes with auto part stores. im just saying to rule out the other **** first before you waste your time taking it all apart. good luck man
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Old 01-01-2012, 02:09 PM   #12
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Default Re: blinking battery light

well wen i got my alt tested they just plugged something to the batt n said it was good
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Old 01-01-2012, 02:25 PM   #13
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Default Re: blinking battery light

Are you mental or something? They tested the battery and said the alternator was good? Did they actually test the alternator?
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Old 01-01-2012, 02:35 PM   #14
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Default Re: blinking battery light

they said the alt was good but they just hooked something up to the batt idk how else to test it do u?
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Old 01-01-2012, 02:52 PM   #15
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Default Re: blinking battery light

What car? A bad battery won't turn on the charging system light because this indicator light signals a charging system problem, not a weak battery.

1) Check whether the alternator belt and all alternator mount/bracket bolts are tight.

2) Get a multimeter and measure voltage across the two battery posts with the warm engine idling under no load (all electrical accessories off) versus under high load (A/C max, high beams, rear window defogger). Post those two voltage readings.
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Old 01-01-2012, 03:14 PM   #16
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Default Re: blinking battery light

Yea check out voltages with a volt meter, might be easiest to get a cigarette lighter volt meter.

Keep in mind that some or all of these cars have an ELD (Electronic Load Detector (current meter)) in the fuse box and the computer will stop the alternator from outputting the normal charge voltage during certain conditions, to save fuel, such as when the car is travelling at certain MPH, engine temp, load on electrical system, whether the fuel is cut off to the engine... So the alternator won't necessarily be at the charge voltage of 14V or whatever all the time.

I'd check the resistances from the alternator to the electrical system.
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Old 01-01-2012, 03:17 PM   #17
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Default Re: blinking battery light

Quote:
Originally Posted by danwat1234 View Post

Keep in mind that some or all of these cars have an ELD (Electronic Load Detector (current meter)) in the fuse box and the computer will stop the alternator from outputting the normal charge voltage during certain conditions, to save fuel, such as when the car is travelling at certain MPH, engine temp, load on electrical system, whether the fuel is cut off to the engine... So the alternator won't necessarily be at the charge voltage of 14V or whatever all the time.
This^ normal ELD function will NOT cause the charging system light to turn on.
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Old 01-01-2012, 03:40 PM   #18
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Default Re: blinking battery light

it does seem to only happen at idle so i guess thats low charge
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Old 01-01-2012, 03:56 PM   #19
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Default Re: blinking battery light

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it does seem to only happen at idle so i guess thats low charge
You now have several tests to do. Report back to us on the results of those tests.
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Old 01-02-2012, 07:15 AM   #20
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Default Re: blinking battery light

ok well my battery voltage is jumping from 13 14 and 15 bouncing around pretty fast and something by my alt is making a high purring humming noise every half second
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Old 01-02-2012, 07:17 AM   #21
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Default Re: blinking battery light

Sounds like a bad voltage regulator inside the alternator (<--- replace).

Quote:
Originally Posted by swizz977 View Post
something by my alt is making a high purring humming noise every half second
By or inside the alternator?

Also answer these questions:

Quote:
Originally Posted by RonJ@HT View Post
What car?

Are the alternator belt and all alternator mount/bracket bolts tight?
----------------
You MUST provide all pertinent information about your car and engine. Failure to do so may result in thread closure.

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Old 01-02-2012, 08:09 AM   #22
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Default Re: blinking battery light

1992 civic si
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Old 01-02-2012, 08:18 AM   #23
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Default Re: blinking battery light

Quote:
Originally Posted by RonJ@HT View Post
1) Check whether the alternator belt and all alternator mount/bracket bolts are tight.
He advised you to do this as well. What about it?
It's like pulling teeth with you.
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Old 01-02-2012, 04:01 PM   #24
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Default Re: 92 civic si -- blinking battery light

also everytime the batt blinks the headlights n dash flicker at the same time
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Old 01-02-2012, 04:14 PM   #25
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Default Re: 92 civic si -- blinking battery light

You must really like locked threads.
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