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Posted on May 15, 2011
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New alternator puts out 11.7 volts. Changed it for another which is also putting out 11.7 volts. Changed double female connector; no help.

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  • Jeffery Lewis
    Jeffery Lewis May 15, 2011

    what year, make,model and engine size are we working on

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  • Posted on May 15, 2011
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First, make sure that the alternator is properly grounded.
Second, with what are you measuring it? I have a couple of cheap ($10-$30) Chinese-made digital voltmeters around my garage that I know for a fact don't measure DC voltage accurately. They tell me a battery has 11 volts, and I dig out my trusty 40-year-old analog voltmeter with a cracked face and it accurately reports 12.6 volts as it should. Also, the digital meters also drift like crazy when I try to measure resistance with them.
I don't know why, but it seems that you cannot buy a reliable voltmeter for less than $125 any more.

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