battery guage reads above 12 volts charging


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battery guage reads above 12 volts charging

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greengrass20
Novice

Oct 13, 2009, 9:25 AM

Post #1 of 6 (1724 views)

battery guage reads above 12 volts charging	Sign In

1989 Nissan /Pathfinder.v6 4x4.
when accelarating needle goes close to 18volts and head lights get brighter than usual.

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Oct 13, 2009, 9:31 AM

Post #2 of 6 (1717 views)

Re: battery guage reads above 12 volts charging	Sign In

That is a problem and will cause a lot of damage. It's a bad voltage regulator which is built into the alternator so you'll have to replace the whole alternator.

Test your battery first to make sure that is good before putting a new alternator in it.

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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.

greengrass20
Novice

Oct 13, 2009, 9:35 AM

Post #3 of 6 (1713 views)

Re: battery guage reads above 12 volts charging	Sign In

Thank you very much. You have made my day.You are BLESSED!

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 16, 2009, 10:21 AM

Post #4 of 6 (1704 views)

Re: battery guage reads above 12 volts charging	Sign In

He sure is greengrass20! Don't allow the high voltage. It will blow bulbs all over the place and be a real pill and other things possible!

T

greengrass20
Novice

Oct 16, 2009, 6:02 PM

Post #5 of 6 (1694 views)

Re: battery guage reads above 12 volts charging	Sign In

Thank you.

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Oct 16, 2009, 11:12 PM

Post #6 of 6 (1689 views)

Re: battery guage reads above 12 volts charging	Sign In

GG - expect higher than 12 - like 13.8 to 14.5 or so while running - no more!

T

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