Alternator still over charging - Team Camaro Tech
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post #1 of 3 (permalink) Old Jun 16th, 03, 05:35 AM Thread Starter
 
Join Date: May 2002
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I changed my voltage regulator on my 68 350 because the alternator was over charging whenever the engine was running. No improvement. I changed the alternator yesterday and still no change. I'm going to pick up another voltage regulator at lunch today. Could it be that the old one was defective?
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post #2 of 3 (permalink) Old Jun 16th, 03, 06:34 AM
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Join Date: Sep 2001
Location: Temple City, Ca
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Without you taking some voltage measurements at different points, answers are only a guess. Here's my guesses:
Do you have a ground wire from battey (-) to the right inside fender?
Is the regulator grounded? If it is mounted on rubber wellnuts, it needs a ground strap to the core support.
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post #3 of 3 (permalink) Old Jun 16th, 03, 07:01 AM
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Join Date: Oct 2001
Location: Londonderry, NH
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Listen to John!

It sounds to me like your regulator isn't grounded. This is pretty common on GMs with mechanical regulators. If you don't have the ground strap from the battery to the core support and the one from the core support to the regulator, then the car will radically overcharge and kill the battery.

When the car overcharges, it overheats the battery and warps all the plates. (the case will get all huge and round )
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