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please help. new alternator not charging battery

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Old 06-22-2011, 04:03 PM
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Default please help. new alternator not charging battery

dont know if this is where i should be posting this but i got a new alternator and installed it and it still is not charging the battery. has anyone had a problem like this that can help me out? battery reads 11.85v when the car is running. im pretty sure that is not right. if anyone can give me some info on this it would be greatly appreciated.
Old 06-22-2011, 09:25 PM
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not all rebuilds are worthy.......many failures right out of the box
Old 06-23-2011, 12:35 AM
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its a new gm alternator
Old 06-23-2011, 05:53 AM
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Is the plug with the red wire plugged in all the way? What about the main battery cable?
Old 06-23-2011, 01:57 PM
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Are you sure you have a good battery? If you had a bad alternator and it was made bad by a weak/bad battery that perhaps sat over the winter w/out a trickle charge, you need to replace the battery first, else you could strain new alternators to fail with that same battery.
Old 06-26-2011, 10:57 AM
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GM does not make new alts.......only remans
Old 06-26-2011, 12:46 PM
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Make sure that grounding screw on the regulator is properly installed

I pulled that trick on myself about 2 years ago and had the same problem
Old 06-26-2011, 05:18 PM
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Originally Posted by sjsingle1
not all rebuilds are worthy.......many failures right out of the box
x2 I hate reman alternators because i only get paid to put them in the first time, not the second and third.



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