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Reload Thread: voltage drop

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    Lschevelle's Avatar
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    voltage drop

    Is there a way that i can test voltage drop with a digital multimeter







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    Re: voltage drop

    crank your system. and put the volt meter on the amps power and ground terminals.

    if it goes down your getting drop.



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    Re: voltage drop

    any specific setting?




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    Re: voltage drop

    DC volts. It's just the same as measuring the voltage of a batt. You're just going to watch it while it's playing. That's all.



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    Re: voltage drop

    I think I need to change my batt. thats under tha hood. I just tested it and its going from 12.8 to 11.5




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    Re: voltage drop

    do so it might help



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    Re: voltage drop

    well if it was at 12.8 before playing music than you might want to check your alt. on a 12volt system it should read 14.4 while vehicle is running



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    Re: voltage drop

    Quote Originally Posted by taysextreme View Post
    well if it was at 12.8 before playing music than you might want to check your alt. on a 12volt system it should read 14.4 while vehicle is running
    depends if the car is running or not. my stock alt charges at 13.8




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    Re: voltage drop

    Put the meter on minimum responding (if equipped)... that will tell you the min voltage you got without having to constantly watch the meter...




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    Re: voltage drop

    Buy a stinger volt meter for $20 and watch your voltage from the driver’s seat. I like to know my voltage at all times.



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    Re: voltage drop

    It rest at 14.1 with no music playing with the car on




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    Re: voltage drop

    Quote Originally Posted by Lschevelle View Post
    It rest at 14.1 with no music playing with the car on
    That’s great and all but I would be more concerned about what my voltage is under load.



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