Charging Issue

[DRated]

So, tonight I got my car back and after a while the battery was dead. I replaced the battery and everything seemed cool. After driving and revving it up, the volts on my voltmeter drops to 12... (Running off the battery). When I stop at the stop sign, the voltmeter climbs back to 14.0. What's the deal with that? Any suggestions?

 

[92awddsm]

Probably your alternator. Have your charging system checked out at your local advance, autozone, etc.

 

[DRated]

Why do you think its my alternator? Its only got 300 miles on it, but maybe its a rebuilt that is defective. Why would it charge sometimes and not others? Is there a such thing as an alternator belt being too tight?

 

[Defiant]

Why do you think its my alternator?

Because you said your voltmeter drops to 12.

Its only got 300 miles on it, but maybe its a rebuilt that is defective.

There you go.

Why would it charge sometimes and not others?

Because it's defective.

Is there a such thing as an alternator belt being too tight?

Yes. But that's not what's wrong with yours.