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I recently installed a new stereo system into my car now my car sounds like my battery is weak is it my battery that I have to change or my alternator?
Wiki User
∙ 14y ago
Check the battery with a vom meter while the engine is running. It should read about 14.5 volts and if so the alternator is working, than have the battery checked Now if the meter does not read 14.5 volts, have the battery, and the alternator checked. If they both check out okay, the problem is in the battery or the alternator circuit on the vehicle.
Wiki User
∙ 14y ago
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How does your car sound if you put in a battery after a month?
If your question is what may be a problem with a car that you have to change the battery after a new battery was installed a month ago? Then the alternator may be suspect and or a draw from the electrical system.
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I had this problem. The alternator was fine, it was the battery that was bad. The alternator was "pegging" out the indicator bc it was trying to charge the battery, but it wasnt taking charge. Take the battery out and have it checked.
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no if your battery light is on and the brake light on then your alternator need to be change
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