Question about 2002 Volkswagen GTI

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Electical system keeps spiking causing headlights and interior dash/stereo lights to dim and then get bright randomly. also the battery seems to get week quickly. Think it might be the altenator but do not want to spend the money to fix it without knowing for sure and do not know how to check an altenator.

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It does sound like an alternator. To verify take a voltmeter attach to battery while car is idling and your readings should be between 13.1v - 15.8v anything lower, alternator is bad,

Posted on Mar 14, 2011

  • gpd335 Mar 14, 2011

    Thanks for the help!

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