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 How To Test Your Alternator Is Working Correctly

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Father Tiresias
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Registration date : 2013-02-06

PostSubject: How To Test Your Alternator Is Working Correctly   Mon Apr 01, 2013 9:14 am

A lot of misinformation is out there about testing alternators. Here is the correct procedure from a time served old school auto electrician that I know:

Take the vehicle for a short drive with everything turned off, say five or so miles. On return without stopping engine and with everything still turned off raise the engine speed to 2-3000 rpm and check the battery volts. They should climb to 14.4v as a minimum. If not as much as 14.4v the voltage regulator is faulty. An alternator that only outputs 13.6v will give you about 6 months battery life. Anything more than 14.8 volts will cause the battery to gas too much and eventually boil dry
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beefybake
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PostSubject: Re: How To Test Your Alternator Is Working Correctly   Mon Aug 26, 2013 3:42 pm

Very useful info thank you for this
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How To Test Your Alternator Is Working Correctly

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