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1990 GMC Safari Repair Question


Topics covered: Battery, Engine, Alternator.
Mileage: No information provided.

Asked on August 9, 2010

Battery

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.
Avatar Asked by ManConfused39

Answer

Replied on 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.

Tiny Answered by mmprince4000 (expert)
8,854 answers provided
Replied on August 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?

Tiny Response from ManConfused39
2 questions asked
Replied on August 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.

Tiny Answered by mmprince4000 (expert)
8,854 answers provided

Replied on August 9, 2010

Can I repair the battery gage meter?

Tiny Response from ManConfused39
2 questions asked
Replied on August 10, 2010

Probably not, but aftermarket AMP and Voltmeters are available everywhere.

Tiny Answered by mmprince4000 (expert)
8,854 answers provided