1990 Honda Accord alternator

1990 HONDA ACCORD
217,000 MILES • 4 CYL • FWD • MANUAL
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DCOOK926
  • MEMBER
  • 2 POSTS
i am baffled by this problem hopfully someone can help.my alternator isnt charging withboth battery cables on the battery when i disconnect the ground wire from the battery the alternator works put the neg battery cable back on and it stops working. any ideas on what to check
Dec 26, 2009 at 1:04 PM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
Hi dcook926,

I need some clarification on the problem.

What indication do you have that the alternator is not charging with battery connected?

Why do you say the alternator is charging when the battery terminals are disconnected?

Was any DVOM used to test the charging?
Dec 27, 2009 at 5:06 AM
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DCOOK926
  • MEMBER
  • 2 POSTS
when i connected the volt meter across the battery terminals with the engine running the meter reads about 12.5 volts when i disconected the negative terminal on the battery it read14.5 i took the alternator to be tested and they say there is nothing wrong with it
Dec 27, 2009 at 5:16 AM
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KHLOW2008
  • ✓Experienced Mechanic
  • 41,812 POSTS
You might have a bad battery. When the battery is bad, the charging would not be accurate. Did you test if the battery is ok?
Dec 27, 2009 at 5:33 AM
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