LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

alternator test

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Old Jun 5, 2006 | 10:10 PM
  #1  
gillt1's Avatar
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From: brandon,manitoba,canada
Question alternator test

Hi, can anyone tell me how to test alternator while still in car,guage shows discharge after approx. 5 minutes of run time , Thanks for any help.
Old Jun 5, 2006 | 10:34 PM
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Josh'95Z28conv's Avatar
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From: San Antonio, Texas
Re: alternator test

Put a meter on it to see if the voltage is up. Factory guages suck. Mine usually says 18vdc, when its in the 13vdc range. You might also put a dc amp clamp on the alternator wire to see if it is charging.
Old Jun 6, 2006 | 09:34 AM
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OBE1 95Z28's Avatar
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Re: alternator test

Here's a link with the details:

http://autorepair.about.com/cs/elect...a122700a_2.htm
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