dangerously high volt reading??
I have an optima red top battery thats been in my car for like a year now hassle free and it IS the correct battery for my car.
but, latly i have been noticing oddly high volt readings on my gauges.. im talking like 16 volts... not quite to the red line on the gauge... but gettin pretty close... i remember normal being like 13... basically im just wondering if this is bad, what could cause it to happen, and what if anything i should do about it.. thanks for the help =] Jared |
i have noticed in the morning , when its very cold out . my gauge also reades a higer voltage then normal . did you put a volt meter on your battery or alt ?
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I would check the voltage across the battery posts first. The interior gauge is not always accurate.
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no i have not... anywhere i could get a volt meter without having to buy it? like borrow from autozone or something?
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I'm not sure if you can borrow one or not from Autozone, but considering you can get a cheapie one without the bells and whistles for under ten bucks, it wouldn't hurt to have one lying around.
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o cool
ok thanks! =] say the battery ends up reading the same as the gauge, what would be my next course of action? |
You can get a small pocket sized digital volt meter from radio shack for cheap. 16V running after warmed up is too high. My red top on a cold start can get almost to the 3rd mark on the gauge, but falls back down after a few minutes. The voltage regulator is internal to the alternator.
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more than likeley you have either a bad rectifier or a bad regulator in your alternator.
either get it rebuilt or get a new one....autozone can check it for you. I don't know about dry cell batteries but in a wet cell it can make the batt. explode |
awesome awesome... hey thank you guys for all the help, i'll look into it asap.
Jared |
Go to autozone and have them check the battery and charging system. They will do it free. The machine they use will load test the battery and test the charging system for a defective alt or regulator
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if the charging voltage @ normal temp is around 16v (checking voltage at the battery) definatly the regulator is bad. dont waste the money and buy another alt, just find a starter & alt shop in your area and you can either rebuild or repair yours.
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i also have the optima red top battery and have the original 92,000 mile 140 amp alt and when i start my car when its cold it hits that last line before the red on the guage i've put a voltmeter on the battery and voltage is in excess of 15 volts
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Originally Posted by Spllouder
(Post 4354341)
i have noticed in the morning , when its very cold out . my gauge also reades a higer voltage then normal
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Originally Posted by mdacton
(Post 4354454)
more than likeley you have either a bad rectifier or a bad regulator in your alternator.
either get it rebuilt or get a new one....autozone can check it for you. I don't know about dry cell batteries but in a wet cell it can make the batt. explode |
When my brothers Jeep was reading high voltage (his gauge was up in the red) it ended up just being very corroded battery connections and old cables. I would make sure those are okay before getting a new alternator.
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