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Old 11-08-2011, 10:17 PM   #1
Sonyps307
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Default Battery overcharging

Ok so my Alternator went out on me so I replaced it yesterday. So then today when I was coming home from work I was getting on the highway I punched it then my volts Meter shot up to 18 volts the come down when I let off. Need help I had the alternator and battery tested all it good.
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Old 11-09-2011, 12:42 AM   #2
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It only goes up to 18 volts when the car is up in hight RPMs like after 4,000rpms
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Old 11-09-2011, 01:43 AM   #3
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The rebuilt alternator has a bad regulator. I had the same problem with a reman alternator in my wife's Celica. Take it back and make them replace it. The tester obviously doesn't rev the alternator up enough to trigger the fault.
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