Mechanics

BATTERY

1990 GMC Safari

1990 GMC Safari 6 cyl Four Wheel Drive

I would like to know why the battery gage reads that the battery is low. I have replaced the battery, starter and the alternator. Once I remove the positve from the battery the van turns off. I place the positive back on an the battery reads low as if it is not charging. Please help.

Thank you.
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ManConfused39
August 9, 2010.




Do not remove the battery cables when engine is running, this can damage alternator.

Take car to most autoparts stores and have charging system tested for free.

Mmprince4000
Aug 9, 2010.
Thank you. I did take the van in for testing and was told that everything was charging ok. But they did not have answer to why the battery meter would stay on low.

Can it be possible that the meter is broken?
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Tiny
ManConfused39
Aug 9, 2010.
Yes.

Measure voltage at battery terminals with DVOM.

With engine running, it should be 13.5-14.0V. With engine off, it should be 12.0- 12.5 volts.

Mmprince4000
Aug 9, 2010.
Can I repair the battery gage meter?

Tiny
ManConfused39
Aug 9, 2010.
Probably not, but aftermarket AMP and Voltmeters are available everywhere.

Mmprince4000
Aug 10, 2010.

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