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Alt charging at 13.7v, is this right?

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  #16  
Old 10-28-2008, 12:47 PM
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Originally Posted by bkcowboss
I found that my Alternator was testing normal on the truck, or I should say not turning up bad, but when I took it off and went inside to test it, it showed up bad. I was putting out 13.6v

Edit: It was also an advance auto parts less than one year old alternator
Hasn't the voltage-regulation been made a function of the truck's PCM, rather than by an internal regulator?

If so, then wouldn't the level of charge depend on whatever computer the store hooked up to the alternator?
 
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  #17  
Old 10-28-2008, 01:45 PM
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I thought that the voltage regulator was a diode network which was located inside the alternator casing.
 
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  #18  
Old 10-28-2008, 01:53 PM
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Originally Posted by brian42
I thought that the voltage regulator was a diode network which was located inside the alternator casing.
Your right

And I replaced the alternator and it fixed the issue, now getting 14+v at idle.

Third one in three years
 
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  #19  
Old 10-28-2008, 02:06 PM
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Originally Posted by 02GrayPowerStroke
Your right

And I replaced the alternator and it fixed the issue, now getting 14+v at idle.

Third one in three years
Glad you fixed it. I hope you are not frequenting the same store for those 3 alts.
 
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  #20  
Old 10-28-2008, 02:35 PM
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Originally Posted by 02GrayPowerStroke
Third one in three years
I know where I'm NOT going for new alternators!

I'm glad you got it fixed.
 
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