Why does the battery keep going dead and the battery light stay on?

40

Asked by jagfix Jan 01, 2015 at 04:49 PM about the 2005 Chevrolet Venture

Question type: General

The battery is new, but about once a week the battery is dead. The alternator output is about 14.4v and maintains the voltage under load, but the battery light remains on.

8 Answers

40

Jim, I assume I could check that with an amp meter? I was considering replacing the alternator, but the cost is high for an uneducated guess. Also, it seems to be a difficult replacement.

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645

you could also do a quick check by starting the vehicle and with it running disconnect the negative battery cable the unit should stay running but if it dies replace the alternator

2 people found this helpful.
40

Thanks Jim, I was just about ready to try it. I'll do the amp check in the morning. I'm not sure the specs on this alt. 90, 120???

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40

Thanks again Jim. I removed the alt and had it tested at Advance, they claimed it was good but the results f

1 people found this helpful.
40

Thanks again Jim. I removed the alt and had it tested at Advance, they claim it was good but the results didn't show amps??? I chose to buy one and installed a 125 amp one and the battery warning shut off. I assume the problem is corrected. Thanks for the help.

1 people found this helpful.
645

thank you as well for letting us know about not disconnecting battery cable while car is running on newer cars, I have done it a quite a few times glad I didn't fry anything trying it.

1 people found this helpful.
20

HELP PLEASE My 01 venture is doing the same thing I changed the alternator and the battery decided to ride to AC everything was fine until I started it to go to the store and it started soon as I turn on the road it shut down I restart it and shuts down again PLEASE HELP

2 people found this helpful.

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