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New Alt Still voltage drops!
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<blockquote data-quote="helotaxi" data-source="post: 1744971" data-attributes="member: 550915"><p>Depends on the car. Some ECUs regulate the alt to around 13.8V. As long as it is abover 12.5ish it should charge the battery.turning off the system would allow the battery to be charged.Probably the most likely cause.doubtful, he would hear the squeal and none of the other belt driven accessories would work right either.</p><p>I'm guessing either bad battery, or bad ground.</p><p></p><p>BTW, have you done the big 3 yet?</p><p></p><p>The alt shop should be able to test the alt with the system running.</p></blockquote><p></p>
[QUOTE="helotaxi, post: 1744971, member: 550915"] Depends on the car. Some ECUs regulate the alt to around 13.8V. As long as it is abover 12.5ish it should charge the battery.turning off the system would allow the battery to be charged.Probably the most likely cause.doubtful, he would hear the squeal and none of the other belt driven accessories would work right either. I'm guessing either bad battery, or bad ground. BTW, have you done the big 3 yet? The alt shop should be able to test the alt with the system running. [/QUOTE]
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New Alt Still voltage drops!
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