Question about Honda Civic

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I have a 2000 civic si. I had a problem with my battery so I replaced it. Still went bad. Replaced alternator, still went bad. Have no clue now. What might I b missing?

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Did the battery go bad or down? Batteries fail if their overcharged, not charged, or dragged down from sitting with a draw on them. The altenater may not work correctly as a fuse may be blown. The big power wire on the back of the altenater is hot all the time the battery is connected. Make sure that it is. The plug that plugs into the altenator one wire hot all the time and the other is on with the key if itdoes'nt do that your on the serch to do that. with a volt OHM meter you can tell if it's charging 14.5 volts running and 12.6 volts sitting with the key off. if the battery is below 10 volts the altanator may be a good one but it's smart enough to not to try to charge a dead battery so it won't turn on. The liklyhood of the battery being bad even with it new is possible so don't rule that out.

Posted on Sep 01, 2010

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Replaced the alternator and battery on 98 civic ex, car ran cherry and all of a suddent doesnt want to start, just died on me while driving.

ran cheery, the exhaust ran red hot? LOL.
the engine runs off the alternator not the battery.
so , if the alt is bad,the battery will discharge.
the alt charge lamp glows, did it?

old post,
bad alt, or battery is no good.
try a known good battery , and make sure the
voltage across the battery is 13.3v to 15vdc running.
if not the ALT System is bad, notice I said system.

btw , replaced means nothing to me.
new , used, rebuilt, recycled, , what?

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Hi there,

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zSounds like you have a bad ground situation. There is a grd to the engine from the bat and one from engine to the body at the rear of the engine. chk them both for clean tight connections. Good luck. Your baterry should charge between 13.6 -14.2 range.

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All my lights are flickering on my car....

Check Alternator Diode if one is bad it can make your lights flicker, but it will show the alternator as being good.

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