How many Volts should i have - Ford Powerstroke Diesel Forum
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post #1 of 4 Old 02-10-2011, 04:19 AM Thread Starter
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How many Volts should i have

Guys,
I have a Scan 2 gauge and it is reading 12.5 - 13.5 Volts MAX!!! Is my alternator going out? I just put two new yellow tops in.

I guess i was expecting more like 13-14.4v???
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post #2 of 4 Old 02-10-2011, 04:21 AM
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Depends on RPM and charging. Are the optimas fully charged.? Are they both good.

Not the first bad optima to hit the shelf

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post #3 of 4 Old 02-10-2011, 04:42 AM
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If it is a stock alternator that is pretty much normal.

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post #4 of 4 Old 02-10-2011, 06:46 AM Thread Starter
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I actually put them on my ctek charger/maintainer that is ment for yellow tops. They both tested good and have been full charged. They act normal, but it just looks low to me.
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