Snowman Posted September 23, 2003 Share Posted September 23, 2003 I am kind of baffled. When my car is just cruising along, the voltmeter will sometimes fluctuate by a few volts. At idle, the voltage will fluctuate more, occasionally going down below 12 volts. Regardless of engine speed, the turn signal or brake lights will cause a voltage fluctuation and a slight dimming of the headlights. Voltage regulator bad? Alternator? Something else? It's got an almost new Optima battery in it. Quote Link to comment Share on other sites More sharing options...
Russ Hill Posted September 23, 2003 Share Posted September 23, 2003 Bad alternator Quote Link to comment Share on other sites More sharing options...
Caboobaroo Posted September 23, 2003 Share Posted September 23, 2003 this is a good sign your alternator is going bad. At least its not going up in voltage and not stopping because that can start to fry major electrical parts. I know if your alternator goes bad and you have a digital dash, it can sometimes take a toll on the dash which we all know, is not a very cheap part:banghead: Quote Link to comment Share on other sites More sharing options...
mcbrat Posted September 23, 2003 Share Posted September 23, 2003 check this out.... similar symptoms Quote Link to comment Share on other sites More sharing options...
struculeus Posted September 23, 2003 Share Posted September 23, 2003 Maybe check the ground... J Quote Link to comment Share on other sites More sharing options...
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