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Old Mar 30, 2018 | 08:42 PM
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Voltage issue

Recently I replaced my passenger side battery through a warranty. That was 3 weeks ago, now my voltage on my edge is saying I only have 13.3V and will go up as the RPM goes up. Originally my voltage would always be 14.3v and now it fluctuates. Yesterday it was 14.1 today it’s 13.1v. I am thinking it’s my alternator, any suggestions?
 
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Old Mar 30, 2018 | 09:04 PM
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I would start with metering voltage at the alternator at idle then at the battery. I think the alternator voltage should be 14-14.5 vdc
 
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Old Mar 30, 2018 | 10:15 PM
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Voltage should not fluctuate with RPM. By definition it means bad regulation. Sometimes you'll see headlights or dash lights fluctuate. Not good.
 
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Old Mar 30, 2018 | 10:41 PM
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Originally Posted by Tedster9
Voltage should not fluctuate with RPM. By definition it means bad regulation. Sometimes you'll see headlights or dash lights fluctuate. Not good.
Not hijacking this thread ! My Edge reads the same ad the OPs. Sits at 13.1 @ idle and rises with rpm,

What would cause this ?

You mentioned bad regulation ? Im not too knowledgeable on Alternators but do they have a built in regulator ? If so can it be replaced ?
 
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Old Mar 31, 2018 | 12:18 AM
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Yeah so far by my research I think it’s a bad voltage regulator cause sometimes it’ll sit at 14.1V and other times it’ll be a different number. Might just buy a mean green alternator and call it a day.
 
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Old Mar 31, 2018 | 06:31 AM
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I would put a meter directly on the alternator output, to make sure it's not a poor cable connection.
 
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