Best Answer

A loose cable, the voltage regulator or altenator! If it is the voltage regulator or alternator in most cases they are housed together, so it you change one, you have to change both! Just about any of the chain auto parts store will test it for you at no charge or the car is broken

2009-11-10 00:06:26
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Related Questions

Why Battery will not stay charged alternator and battery are good?

something is causing a drain on the battery when switch is turned off

If you constantly run your car with a dead battery will this hurt your alternator?

Yes, alternators are designed to maintain the battery, or recharge a battery that has been slightly discharged from starting the car. When the alternator is used to recharge a dead battery, it causes the alternator work harder and longer than it is designed for, causing it to overheat, thus causing damage to the alternator. A battery charger should be used instead. They are designed for charging dead batteries. After the battery is charged, let the alternator maintain the charge.

Why does Ford Mondeo sometimes not start without a jump?

weak or faulty battery, faulty alternator (or slipping alternator belt causing battery not to charge) or faulty starter motor

Why does auto battery leak after charging?

An auto battery could be leaking for a couple of reasons. The alternator could be overcharging the battery causing the leakage. Or the battery itself could have a short or other internal problem causing it to leak when charging.

Will the altnator lock up causing car to stop?

It can happen. The bearings on the alternator of my Silverado did that once, and it ended up causing the vehicle to shut down. the alternator on your car charges the battery which in turn runs the electrical supply to the car. if your alternator is damaged the battery will deliver power to the eletrical system until it no longer can and the car will stop running.if i were you i would replace the alternator,recharge the battery if it is still good and then happy motoring.

What does it mean when your steering becomes heavy and your battery light comes on in a ford fiesta?

Alternator Belt has snapped, causing you alternator to stop charging causing you battery light to come on, but this belt also runs your power steering pump which if that's not working your steering will become heavy

What might be the problem with a 1988 Civic Hatchback that is causing the battery to discharge Have already replaced alternator igniter coil main relay and the battery?

You have a short - it's hard to be more exact than that, but if you disconnect the battery and charge it outside of the car and it stays charged, you have a short. If it does not stay charged, you need a new battery.

What can kill a battery?

If its an old battery the cells could be dried up, meaning there is not enough battery acid in it, or if you leave your lights on, or a bad alternator could be causing the battery to not charge while the car is running.

Your battery light has started coming on and you have a belt squeeling is the two a related problem 1997 geo prism?

Loose or worn fan belt would cause alternator not to spin fast enough to charge battery. Worn bearing in alternator could be causing it to seize and causing belt to slip

All gauges erratic and voltage to battery is 19 volts computer and alternator has been replaced what causing?

All that would be left would be a short in the wiring to the alternator.

What could be causing a new battery to be losing life?

Some light may be on pulling power from the battery. Can also be a stuck relay. The new battery is possibly defective. Alternator can be weak.

What happens when your alternator is not charging properly?

Your vehicles primary battery will drain eventually causing it to not start. If you drive for a long time with a dead alternator the vehicle can (rarely) shut off.

Your battery drains on your 1988 Chrysler Fifth Ave you were told it maybe the idle control sensor you had your battery and starter checked by your battery is still draining?

Have you had the alternator tested? It may not be regulating the energy to the battery, causing it to drain

Why does the battery keep dying and the 3.0 engine on a 1997 Ford Aerostar have poor performance?

It sounds like you simply need to change the alternator. Easy test: if vehicle will start, carefully remove the ground/negative cable from the battery (may help to llosen slightly beforehand). If vehicle runs, turn on lights; if it still runs, the alternator is fine. All vehicles should run on alternator only. If the vehicle sputters and dies, the alternator is dead. Replace alternator, and VERY IMPORTANT, fully charge battery before engaging alternator. A weak battery can damage a new alternator causing alternator death.

What is the battery doing while the gas is causing this combustion and causing the car to move?

Nothing, the battery did it's only job by cranking the vehicle. Now it is up to the alternator to keep all electrical working while the car is in operation.

If I'm on my third alternator in my 2000 Toyota Sienna in a year something is killing them what is killing my alternator?

i would start by testing the battery , i have seen cases where the battery was good enough to start the vehicle but was causing the alternator to do all the work resulting in premature failure. my f150 went through a brand new ford alternator in 2 months .

My car died while driving last night so i replaced the battery. AutoZone tested the alternator and said it was working but it was draining my battery slightly...what could be causing this?

Don't believe a word AutoZone tells you. My battery died so I went there and they tested my battery and alternator and told me it was the battery. So I bought a new battery and 2 days later, dead again. Went back and they tested again and THIS time, it was the alternator. I went nuts on them and ended up getting both my battery AND alternator for free for their mistake that left me stranded at 12am.

What could be causing the the battery light to stay on after replaceing the battery in a 2003 Ford Expedition?

The battery light comes on when the alternator is not charging. Changing the battery did nothing. Either put a gauge on the battery to see if it is charging, or while running, disconnet the positive cable from the battery. If the car dies that means the alternator is not charging. Most parts stores will check it for free. Oriely's , Autozone, etc.

What light comes up on the dashboard of a BMW if your alternetor is broken?

The low voltage light should come on if you have a bad alternator. Without a good alternator, the battery will die causing the low voltage.

Why are your lights dim on your 1990 Nissan nx?

Depending on how dim, it could be your battery, alternator, or poor power supply at the headlight socket. Poor power supply meaning corroded wires causing high voltage drop. Have the battery and alternator tested and go from there.

Could a bad battery turn the check engine light?

A bad battery will not turn on a check engine light. A bad alternator however will. Have your vehicle checked and see if the alternator is putting out at least 13.5 volts and if so there may be another issue causing the light .

What is causing water to vent from car battery?

It may be that your alternator is overcharging and causing the the battery acid to expand and blow out the filler cap vents. Use a volt meter to check the charging system when running. It should be in the area of 13.8 to 14.2 volts max. If the voltage exceeds these values, the voltage regulator may be deffectivie or the alternator could also be defective.

Can a bad compressor effect the alternator or battery?

In most cases the air conditioner does not affect the battery or the alternator unless you are running it than yes, any pull on the electrical system such as a bad compressor that has been turned on for any period of time could more than likely drain a battery. Its not likely that it would kill the alternator or the battery, it is more then likely that if you find your alternator is dead and does not work it was on its way out anyway. But, by turning a bad compressor on you force the brushes and the armature to exert themselves causing them to burn out faster.

Why does your headlights keep switching from bright to dim?

Problem with the charging system. Altenator, Battery, etc.. (may even be a loose belt causing the alternator not to spin fast enough to charge the battery).

What could be causing my battery to go dead within a day or so after a full charge it's a 5 year battery and have only had it for less than a year?

A short in the car's electrical system, a bad alternator OR a bad battery.