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View Full Version : weird alternator symptoms



alexlula
08-21-2015, 07:08 PM
Hey guys, i have a 92 na miata and my charging system is acting weirdly, my faulty alternator light is on but the higher the rpm the more it dimes out wich would indicate a weak alternator but my voltmeter is showing otherwise, at idle its at between 12.3 and 13.8 amd at 4k its at 16.3 what could be the problem?

kung fu jesus
08-24-2015, 08:43 PM
What is the reading at the battery while running?