Is the battery good with a new alternator?
Battery voltage was too low to test, so I took battery out and left it out overnight, next morning picked it up, they said battery was good and held charge. Put battery back in and took it for testing, their test said the voltage regulator was bad, so bought a new alternator, installed it, same thing, not charging.
What does it mean when your alternator is not charging?
If the alternator is not charging the battery, you will have a red “ALT” or “charge” sign on your dashboard. This means that your battery is no longer being supplemented for power by the alternator. You will need to recheck the wiring because the light could also be faulty.
What happens when the alternator of a car is dead?
The alternator and the car’s battery work hand in hand. A good battery should give you service for the next five years before its lifespan ends. If your battery is dead, then it will not give power to the car’s alternator. The alternator normally lasts longer than the battery.
How to diagnose an alternator or electrical problem?
Diagnosing alternator problems can be a bit tricky because the electrical system in a car comes from two places, the battery and the alternator. I’ll give you a little background so you can understand what both systems do. The battery has one primary function, which is to start the car.
If the alternator is not charging the battery, you will have a red “ALT” or “charge” sign on your dashboard. This means that your battery is no longer being supplemented for power by the alternator. You will need to recheck the wiring because the light could also be faulty.
Can a car battery be drained by an alternator?
While you might initially think that any problems with electrical things like lights or radio not working are directly related to the battery, the alternator is actually where most of the power in your vehicle comes from. Consider that if you were to leave the lights of your car on overnight by the next day your battery might be drained completely.
Why is my alternator smoking when I hook up the battery?
But sence the alternator is smoking when you hook up the other cars battery then you know that the power is getting to the alternator threw the wiring, so the wiring is probably fine. I still think alternator. More specific “a short” in the alternators internal wiring.
Is the alternator the only thing that powers the car?
Many people assume that the car’s battery is the only thing that powers all electrical components in the car. But, this is not true. The alternator plays a vital role in supplying power to the car’s AC, recharging the battery and ignition.
Can a bad alternator cause a car to not start?
When a car doesn’t start, many people wonder whether the alternator or the battery is to blame. Spoiler alert—when an engine either cranks sluggishly or doesn’t crank at all, the issue is usually the battery. But that doesn’t mean the alternator isn’t occasionally to blame for the battery going dead in the first place.
What should I do if my alternator keeps dying?
The alternator is essentially a generator and it keeps your battery charged while supplying additional electrical power for the other systems in the vehicle. If you have a new alternator and your battery keeps dying on you, then there’s definitely a problem that you’re going to need to look into.
What should the engine speed be with a bad alternator?
Connect the black meter lead to the negative battery terminal and the red meter lead to the positive battery terminal. Increase engine speed to around 1,500-2000 RPM. If the alternator is charging, generally, the reading on your meter should be around 13.5 to 15.0 volts with all of the lights and accessories turned off.
What’s the difference between a bad battery and a bad alternator?
Knowing the difference between the symptoms of a bad battery and a bad alternator can help you decide which one your car may need. Car batteries last from three to seven years if maintained properly. An alternator, meanwhile, is designed to last the life of your vehicle, though that doesn’t always happen.
When a car doesn’t start, many people wonder whether the alternator or the battery is to blame. Spoiler alert—when an engine either cranks sluggishly or doesn’t crank at all, the issue is usually the battery. But that doesn’t mean the alternator isn’t occasionally to blame for the battery going dead in the first place.
What should the voltage be on a car alternator?
Voltage when the car is running. The voltage, when the engine is running, should be in the range of 13.5-14.7 volts. When your car is running the cars alternator is charging the battery, this is why you should see a higher voltage.
How long does a car battery last without an alternator?
If you are lucky and could get up to two hours. Note: In case you have to start the car without an alternator, don’t turn off the engine once you’re going. Starting the car flattens the battery down quickly. Starting a car uses ten times more juice than everything else put together.