Question about 1998 Honda Prelude

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Battery will not charge. Changed alternator and battery still will not keep battery charged.

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The battery may be bad. Most service stations or auto parts stores can test this for free.

Posted on Oct 07, 2009


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2001 ford explorer sport wont charge

I'm not sure if you have all of the info you need to go forward with this.
The battery may be rated for 800 amps but could have less than 12 volts if the alternator is not charging it.
It could have a dead cell which would keep it from holding a charge.
You would need to check the charge of the battery with a volt meter, then see if the alternator is charging at 14 volts when the engine is running. The battery should be at least 12 volts with the engine off.
The problem could be in the wiring from the key switch or dash gauges back to the alternator.

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Have 97 acura won't stay charge changed battery

the battery wont stay charged? if youre putting in a fully charged battery and your car runs, but then the battery slowly dies, the problem will be your alternator. the alternator is what maintains a car batteries charge. try replacing the alternator. hope this helps.

Aug 15, 2011 | 1997 Acura Integra Type R

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I have a 2000 lincoln towncar limo car was running greati stopped to get gas and when i went to start i had no power.i boosted car and got it home,changed battery but i still have no power at all (even...

Hello info49624

you have done everything right so far. now since what you have done didn't work. This could only mean that your Alternator is no longer working. The purpose of the alternator is to keep the battery charged up so all your car functions work. The alternator stands by to restore the electrical charge used to crank the engine. It , once the engine is running, charges the battery and runs the electrical system of the car. It typically takes about twenty miles of driving to restore the charge to the battery from starting the engine. Most alternators are internally regulated to assure proper output voltage . Older cars have alternators with external regulators There are some exceptions to this but this true in the majority of cases. One of the exceptions is a high current alternator for a Lincoln that delivers 120 volts AC for receptacles (the same as at home) in addition to the charging of the battery.


Jun 02, 2011 | 1999 Lincoln Town Car

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Detemined I had a bad alternator on a 2002 Hyundai Accent. After I changed it and got a jump the car would still not run. Should I put a battery charger on the battery to charge it fully?

You should have a qualified shop perform a charging system diagnostic on your car before buying any more parts. With a good alternator and jumper cables connected to a running vehicle, your car should stay running.

Mar 07, 2011 | 2002 Hyundai Accent

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Hello my name is Christina I have a 2005 Ford Explorer and my check charging system light keeps on coming up. I changed the alternator 2 to 3 times already I have had the car for about one year and half....

It seems like there is most likely a bad connection between your alternator and your battery I would look into replacing those wires. That is far more likely than that many bad alternators.

Oct 05, 2010 | Ford Explorer Cars & Trucks

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The altenator is not keeping the charge to the batery....besides the fuse panel in the passager side is there 1 under the hood or another in another location?

Have you changed the alternator. The alternator may not be putting out enough of volts to keep the battery charged, also the alternator could be charging but the battery could have dead cells. What or if any parts have you replaced. Also what does the charge indicator on the gauge cluster indicate and do you have a battery light flashing on the cluster panel.

Aug 28, 2010 | 2004 Ford Expedition

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Changed a bad alternator, new alternator woeks but won't always charge. VM says it's charging and good, so does Autozonw machine but the battery icon keeps flashing. Really stumpped. 2004 Ford Truck...

check your battery make sure it is able to take a charge. ,if the amps are good check your connection, from altenantor to battery. check voltage drops, battery drains. Your problem most likley seems to be
your battery. Your starter might also be draining your battery. You ll find the problem keep looking.

Apr 25, 2010 | 2003 Ford Escape

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Battery not keeping charge after alternator changed out..

If you have a voltage regulator than yes this could very well be the problem however I dont think your truck has one. Normally when this thing happens you check the diode in the alternator but you said you replaced the alternator so well assume that is not the problem. Next with the engine off and all electrical acc off. Loosen the positive cable on your battery take the cable off and watch for a spark between the cable and the battery, if there is a spark that means you have juice being drawn from your battery look for a short in your wiring.

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Charging system keeps killing alternaters what is the proplem

Most likely the battery was bad before replacing the alternator. Usually one can cause the other to fail. If you have a bad alternator and it's been charging the battery with low voltage for some time, the new alternator can actually "kill" the battery. If the battery is older, usually I replace it when replacing the alternator.

Jun 08, 2008 | 1998 Oldsmobile Aurora

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