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Charging problem

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Old Oct 14, 2009 | 06:16 PM
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Default Charging problem

My 66 will not charge. I took off the battery post while running and it shuts off. So I changed out the alternator and regulator and it still willnot charge. I tested the wiring going into the alternator from the firewall and there is no power. from that point i'm lost. How about a little help on this one.
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Old Oct 14, 2009 | 06:26 PM
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how are the connections on the bulk head connector
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Old Oct 14, 2009 | 06:28 PM
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Default check voltage

Whats your voltage a the Hot post at the back of the alternator while running and while stopped?. The field needs to be excited to charge, so you should see battery voltage when stopped and 14 volts when running.
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Old Oct 14, 2009 | 06:28 PM
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Joe, let's start from scratch. Have you measured with a DVM at the battery posts with engine at a increased RPM, say 1800, if so what reading in volts did you get?
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Old Oct 14, 2009 | 06:39 PM
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They seem to be ok I did not change out the front wire harness on this car, they seemed to be ok.
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Old Oct 14, 2009 | 06:41 PM
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I'm not seeing any voltage reading from the alternator or on my gauge inside the car.
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Old Oct 14, 2009 | 06:42 PM
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I will try that I have not checked from the battery post.
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Old Oct 14, 2009 | 06:52 PM
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Check all above.The new VR could be bad.My new one was dead.
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Old Oct 14, 2009 | 08:34 PM
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Check out my website. This will help you diagnose your charging problem.
Joe

http://temp.corvetteforum.net/classi...ternator.shtml
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Old Oct 14, 2009 | 09:44 PM
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Originally Posted by Nowhere Man
how are the connections on the bulk head connector
that is the first place i would look.....STOP pulling the cables off when the mill is running....could damage the alternator.....good luck
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Old Oct 15, 2009 | 10:22 AM
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Ok , thanks for the info, I will try if it helps with the problem.
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Old Oct 15, 2009 | 11:11 AM
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A new voltage regulator out ofthe box was not calibrated correctly on my car, so I went with an electronic Wells VR715, works great.
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