Alternators
Car Batteries

What causes the battery light to come on when the car is still running The headlights and inside lights dim and come back on full charge you already had the alternator and battery replaced?

789

Top Answer
User Avatar
Wiki User
2005-10-27 12:31:06
2005-10-27 12:31:06

There might be a short somewhere, and it is drawing alot of power. It is like an electric chair...When extra voltage is used, the lights flicker, and when the switch is off,it goes back to normal. trying to find the short could be hard though.

1
๐Ÿ™
0
๐Ÿคจ
0
๐Ÿ˜ฎ
0
๐Ÿ˜‚
0

Related Questions

User Avatar

because the battery is the source of the power for the headlights. there could be an issue with the battery or the alternator can be failing.

User Avatar

It means something is wrong with your charging system. Can be a loose of corroded battery cable, defective alternator or a battery with a dead short.

User Avatar

The computer only resets when the battery is removed. The alternator just charges the battery, so if the battery is left connected when the alternator is replaced, the computer should not reset.

User Avatar

Your battery is weak, or your your alternator is not charging battery.

User Avatar

the vehicle needa a new voltage regulater,this should have been checked before battery and alternator as its the cheapest part to replace

User Avatar

Sometimes the bulbs dim with age but usually dim headlights are the result of a poor ground connection, probably at the battery terminal, or a bad battery or poor alternator output. Your local auto parts store professional can check your battery and alternator for you at no charge. Good luck

User Avatar

For keeping the battery charged while using the headlights, radio, a/c, etc.

User Avatar

Alternator is not charging. Have it tested and/or replaced.

User Avatar

Could be bad headlights, foggy or dirty headlight casing, poor power output (bad battery or alternator).

User Avatar

The battery light coming on in your Town and Country minivan means that the alternator needs to be replaced. The alternator charges the battery and if it goes bad it will not charge the battery.

User Avatar

It could be an alternator. Check with a mechanic if that is the issue.

User Avatar

alternator needs to be replaced. battery also might be a problem due to the alternator not charging it

User Avatar

94 Buick Lesabre replaced battery and alternator and the alternator is not charging the battery. Battery light is on and off. Is this fusable link. If so where is it located

User Avatar

There is already a battery charger under the hood. It is the alternator.

User Avatar

You can have the alternator tested free of charge at just about any major auto parts store. By the way, a bad alternator will not "discharge" a battery - the alternator's function is to provide the charge to the battery. If the alternator is faulty, then it is not providing the charge necessary to keep other components from discharging the battery. I had the alternator tested and it was charging. If the alternator has a bad diode, it will discharge the battery. I replaced the alternator and everything is fine.

User Avatar

Some new alternators will not charge unless the battery has a full charge already.

User Avatar

check the alternator. Use a digital multimeter and with engine running you should have 13-14 volts at the battery. If less than 12.5 Alternator is not charging Also check the amperage the alternator is putting out.


Copyright ยฉ 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.