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Alternator needs replacing.

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โˆ™ 2015-07-16 18:13:25
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Q: If a vehicle idles up and down and the lights dim with the idle and when it is in gear the battery light comes on would that be an alternator problem?
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Why does check engine light come on and battery gauge go down in 1993 town and country minivan but problem goes away after a jump start?

The battery is basicly used just to start your vehicle, the alternator is what generates your power once the vehicle is running. Which indicates you need a new battery, not an alternator. That is why you problem goes away after a jump start(boost). If it was the alternator the problem would not go away and your vehicle would have no lights and stall with no start. Either your battery is bad or the alternator is not charging.


Why does Rodeo die when lights on?

Have you had your alternator or battery checked lately? The vehicle could not be charging enough to handle the electrical load


What are the signs of a bad alternator in a Ford Expedtion?

A bad alternator will not give proper power to the vehicle. Dim lights, buzz in the stereo or a dead battery could all be causes of a bad alternator.


Why do your lights dim when your RPM decreases?

Because the voltage drops. Depending on what is the problem changing the battery or alternator will help.


How do you tell if it's the battery or alternator going bad?

A clear sign is if your vehicle wont start without a boost, but fires up fine when boosted. Also dimming lights when vehicle is shut off or running, all signs you alternator is not charging your battery.


Why does the check engine light come on and the alternator gauge jump up and down when the air or lights are on?

More then likely your alternator is bad...But it also depends on what year your vehicle is as well...if its older then it could be the regulator...this tells the alternator how much juice the battery needs...So if your battery is not fully charged then when you hit the lights they will dim and get bright...Best bet..change both battery and alternator..


What are the symptoms of car alternator problems?

Symptoms: Besides having a dead battery.......... If you charge or jumpstart your vehice's battery and successfully get it running to only have it mysteriously die and have no lights, radio, etc.; it is probably you alternator. If your vehicle will run constantly on it's own, but will not start after shutting it off, it could be your battery. If your battery will hold a charge on it's own, but goes dead a while after you start and run your vehicle, it is probably your alternator. Or, if you can get it running, it should have an alternator light that will come on when there is a problem. I would almost bet your car has one... my 1970 ford does.


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.


2000 cavalier wont start and dash lights not coming on?

If the 2000 Cavalier has no lights an will not start, there is an electrical issue. Check the battery, alternator, and the wiring from the battery all the way to the starter to find the problem.


What is wrong with a car if the lights go up and down?

If your car lights are getting brighter and dimmer its probably do to inconsistent charging from your alternator or your alternator is insufficiently charging. To test this start your vehicle and test the voltage across your battery terminals ( pos test lead to pos battery terminal ) it should be approximately 14 volts if your vehicle is a 12 volt system.


If my altanator goes out what will a car do?

If your alternator stops working you are powering the vehicle on your battery and your battery is not being charged by your faulty alternator so eventually as the battery drains down the car will stop running. Avoid using any electrical power...ie...lights, power windows ect and get your alternator repaired immediatley.


Why is it when you turn your wiper's your radio dies and the lights go dim?

Charge your battery!It also sounds like you might have an alternator problem.


1998 Chevrolet Cavalier Daytime Running Lights troubleshooting.?

my 05' cavalier has a bad alternator problem its charging the battery a little bit then stops and the little power my battery has is drained by the end of the night. I replaced the alternator twice and the battery but still no difference.


What will bad alternator do to a cars battery and lights?

A bad alternator will have the effect of draining the battery, resulting in dim lights, trouble starting the car and the like. It would be best to replace the alternator as soon as possible and possibly obtain a new battery. This may vary depending on how much the bad alternator has drained it. You can get your alternator and battery checked any time at Auto Zone.


What do the warning lights on your Toyota indicate?

Typically if both the battery and brake warning lights are on it means your alternator is not producing a proper amount of voltage for continuous charging to your battery. The proper way to find this out would be to apply a meter tester to your battery and run your vehicle at idle. The meter should be set on a voltage setting between 12~16v DC. On idle the alternator should produce at minimum 14.2 volts. If it is not, then therein lies your problem. 99% of the time owners will replace the battery first, but in most cases it is not necessary. Only if you have driven the vehicle continuously while alternator is failing will it become necessary to also replace the battery, as it will end up burning up the battery from continuous draining and recharging.


My head lights get brighter during acceleration. I have replaced the alternator. What causes the battery light and the air bag light to flash on and off when driving a 1994 Ford Taurus Wagon 3.8L?

your alternator was never the problem. Its your battery and/or charging system. the reason the lights get brighter is because the car isn't getting the propper amount of energy from the battery and is having to directly draw off of the alternator. when the engine is rev'ed the alternator spins faster creating more current to charge the battery, witch is why the lights brighten at higher rpms.


Signs that alternator needs repair in 1997 Lexus es300?

BATT/ALT light on; ammeter shows no output; dim lights - start the vehicle and disconnect the battery; if the engine dies, the alternator is bad.


Can a car still run if the battery is dead i.e. will the alternator if working properly keep the car running until the ignition is shut off?

The battery on a vehicle is primarily used only for starting the vehicle and providing power for such things as parking lights, radio etc for when the vehicle is switched off and stationary. The vehicle, when started and running will happily provide its own required electrics by means of its alternator/generator ! Todays alternators require power from a battery to excite the alternator into producing power unlike the old generators.


What is it when the tail lights stay on and interior lights stay on and make clicking sound on 94 stealth?

The engine is clicking with all of the interior lights on? Dead battery... and for future reference... if there is no clicking= really dead battery and it might not recharge. In that case check the alternator, if the alternator is still good, just buy a new battery. If the battery continues to fail to recharge get a new alternator.


What are symptoms of bad alternator?

There are several signs that an alternator is going bad. A few signs are dim lights, smell, warning lights, and a dead battery.


If you have new battery and alternator but battery is still not staying charged what could be the problem?

Something is draining the battery. Check all lights. Glove box, trunk, etc. Also check the power window switch.


If your battery and brake warning lights come on together intermittently in your 99 Galant DE what is wrong?

I had this same problem with my !995 Galant. It turned out to be the alternator.


When you try to start a 98 maxima and it stalls out and won't start and the lights go dim?

I'm no expert, but it could be a battery or alternator related problem.


What does it mean when the battery light and the park brake lights comes onin a 1990 vovlo 740 model?

You have a charging system problem, have the alternator checked


Why did your 1995 Subaru drain the battery?

Depends on if it drained while you were driving or ran down while it was parked overnight. If the battery runs down while you're driving the vehicle then more than likely the alternator is defective. If the battery drains while the vehicle is parked then the problem is either a dead cell in the battery or a light is on somewhere on the vehicle. Could be a under hood light, trunk, glovebox, dome, or even the brake lights. It can also be a relay that is stuck.