Question about 2003 Nissan Altima

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Notice the lights are flickering so slightly. it started about the same time the engine started vibrating slightly.

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The alternator generates the current that the lights will be using and the alternator is driven by the engine power via belts, so the vibration could be directly related with the problem. check belts and make sure they are all sound, good place to start from.

Posted on Mar 31, 2011

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  • gdpe57 Mar 31, 2011

    belt is like new and the premium battery is less than a year old. could there be a bad bearing in the alternator ? thanks

  • finley nyaata Mar 31, 2011

    that could be the reason and you should look at it, but also make sure that the belt pulleys are sound since you feel some vibrations. thanks

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Thanks for choosing FixYa and welcome to the site. Since the fact that your lights are blinking, it is a sign to do with the charging system. You need to test your battery. Make sure it is holding a proper charge. Make sure the terminals are clean and that they are tightened correctly. You may have an alternator going bad. You can easily test it by unplugging the hot side of the battery, which is the red side. Start your car first and then unplug the battery. If your car dies instantly, your alternator is bad. If it stays on, check your battery and your wires. If you have any questions, feel free to ask. I am here to help and thanks for using FixYa.

Posted on Mar 31, 2011

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