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Reload Thread: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

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    Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Soon as I cranked car after adding 2nd run of 1/0 ga ofc to big 3 it was showing 15 4 on volt meter. Is that good or bad?







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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Let it warm up a bit and see if it drops.




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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    My car ran at 15.1v when I first started it earlier then dropped to 14.5v after a min or two




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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Is it factory or aftermarket alt?



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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    ****, nevermind. I jus found that my plug @ alt was loose. So I wasnt getting a regulator. I plugged it back in and with the 2nd set of runs it is holding at 14.4@ idle.




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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    ****, nevermind. I jus found that my plug @ alt was loose. So I wasnt getting a regulator. I plugged it back in and with the 2nd set of runs it is holding at 14.4@ idle.




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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    15.4v?




    All day I'm clippin'
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    cause my trunk always hittin'!

    creating a proper sound wave. Step one, turn it up until clipping. Step two, done.

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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    when i start mine on cool mornings mine starts about 15.1 or .2. The highest its been is like 15.3. But once it warms up it goes down to 14.4



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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    ha. my car is *** backwards. i charge at 14.1 and go up to 14.6




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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Ya, I've had my plug do that as well, but very severe. My plug wasn't touching on my rebuilt factory alt (180a). My voltage would spike to 16v+ and my dash and radio would turn off. I stopped in the middle of traffic and pulled the plug on the alt to save the batteries lol, wasn't going to have those explode. Such a small connection almost killed my ride.



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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    i thought high voltage is good so long as it's not crazy like 18v+



    All day I'm clippin'
    voltage be dippin'
    I don't give a damn,
    cause my trunk always hittin'!

    creating a proper sound wave. Step one, turn it up until clipping. Step two, done.

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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Quote Originally Posted by Beatin' View Post
    i thought high voltage is good so long as it's not crazy like 18v+
    Really strictly depends on the battery and amp dc voltages.



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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Yeah it had me like "wow that second run did wonders!" Lol. Then I figured out the plug got knocked loose.




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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Another quick question, if I clamp both wires from alt together will I get an accurate reading or do I have to clamp each one and add numbers?




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    Re: Alternator charging at 15.4 volts after doubling big 3. Is this ok???

    Quote Originally Posted by ta2ed9783 View Post
    Another quick question, if I clamp both wires from alt together will I get an accurate reading or do I have to clamp each one and add numbers?
    It's gonna show the same number




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