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#1
10-21-2010, 09:35 AM
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alternator/charging system problem
With the car on I get 13.7 volts, and when I turn everything you could think on I get 12.5 volts, is that normal? The other problem is that when I accelerate very fast and the RPM hit 4k or more the battery light comes on for a ¼ of a second, but if I accelerate slow pass the 4k rpm mark it the battery light doesn’t come on. Any suggestions?
__________________
 Every job is a self-portrait of the person who did it. Autograph your work with excellence. 
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#2
10-21-2010, 11:54 AM
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possibly the belt driving the alternator is slipping under extreme power .
if you had it replaced very recently it may need time for the belt and pulley to settle . just my guess from your description .
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#3
10-21-2010, 01:29 PM
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I'd think that if it does the same thing with the new alternator as it did the old one, check the connections at: back of the alternator, jump start connection positive post, engine ground. I have seen it before where the engine ground cable (at passengers side motor mount bracket) had a funky connection and caused a poor charging output and weak starter due to lack of ground path.
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#4
10-21-2010, 01:48 PM
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Thanks for the reply guys, it never did that with the old alternator, the old alternator stopped working completely so I replaced and now is doing that!
I will check the tension on the belts and the connection on the cables!
__________________
Every job is a self-portrait of the person who did it. Autograph your work with excellence.
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#6
10-25-2010, 10:21 AM
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Quote:
__________________
Every job is a self-portrait of the person who did it. Autograph your work with excellence.
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