Bad Alternator vs. Bad Battery [Signs and Symptoms]

进入你的车并只打开一个人的车辆,令人沮丧的是,只需开始点火。几乎总是,这是因为失败的交流发电机或死了电池。

However, between a bad alternator vs. bad battery, how do you know what makes your car not start?

To diagnose your problem, you should understand the functions and operations of both parts in a car. To start and run a汽车引擎,转动电池的点火器以向起动器输送电动震动。起动器为运行交流发电机的发动机供电,交流发电机通过对电池充电完成循环。

Therefore, carefully following this cycle can help you figure out whether you have a battery problem or a bad alternator problem.

How to tell if you have an alternator or a battery problem

最快和最简单的诊断,了解电池和交流发电机之间的哪一个是故障的,是使用消除过程。如上所述,您可以通过忽略电池电源的角色来试图找到故障。得到jumper cables并使用来自另一辆车的不同电池跳动车辆?

If your car engine shuts down immediately it starts or after a short drive, then your alternator has malfunctioned and is not charging the battery the way it should.

If jumpstarting your car works and the car keeps running fine, but thevehicle does not startagain using its power, then you have a dead battery on your hands. Once the vehicle started, the alternator kept supporting the car’s power requirements and attempted to charge the battery, but the battery did not pick up any energy.

或者,您可以使用该交流发电机和电池使用Topdon 12V负载汽车电池和交流发电机测试仪。这种易于使用的测试仪可以测试电池的老化和电阻,并帮助您弄清楚你的手上是否有交流发电机或电池问题。

Read Also:How Long Does it take to replace a car battery?

然而,这里有一些诊断您车辆问题的传统方式。

Start by checking your battery.

When you face vehicle startup challenges, you should always start by checking your battery before the alternator. It’s not unusual to wake up to a dead battery that won’t start during the rainy or cold weather season. Start by checking the battery gauge on the dashboard to determine if your battery sent even a slight charge when you switched your car off.

如果您注意到仪表处的任何昏暗的闪烁灯,那么它意味着即使在汽车关闭时也有使用电源的电源。检查您通常使用的车辆配件的所有连接,如制动灯,刮水器和自动窗开关。关闭所有配件,然后再试一次电池。

清洁终端的腐蚀,跳动汽车,并运行它,看看电池是否会再次充电。

给它几分钟,关掉车,等待它很酷。当您的汽车冷却时,请使用电压表检查电池电压。汽车关闭时,电动电池应读取约12伏。当您打开发动机时,电压表应读取约14-15伏。

如果您的电池读取超过15伏的方式小于12伏,则您有一个电压调节器或交流发电机问题。如果您的电池未注册任何电压,则您可以使用电池,您需要访问汽车商店购买新电池。

Test the Alternator

I case you tested your battery and found out that it works fine, you need to test the alternator to be sure that it can charge up the battery. If the battery is working correctly, but the car has startup problems, then it’s the alternator that will more likely have a problem.

另一种方式告诉如果一个交流发电机是排水your battery is by running your car and unplugging the battery’s positive connection. If the car immediately停止跑步, your alternator has malfunctioned because it should depend on the alternator and not the battery after starting.

另一种简单的方法是测试您的内部灯。当汽车运行时,交流发电机充电。因此,如果车辆的内部灯开始亮相但随着汽车仍然慢慢地逐渐消失,它表示交流发电机的问题。你还会注意到car lights are brighterwhen you accelerate the car, but lose power and become dim when you slow down. These fluctuations show that the alternator cannot keep power when the car is running.

Read Also:How Long Does a Car Battery Last Without Driving?

Signs of a Dead Battery

Many symptoms tell you when your battery is dying or in the process of failure. Some physical signs are conspicuous enough for you to see with your eyes, while others are operational problems related to the battery failing to adequately perform its functions. Here are the symptoms of a bad battery.

糟糕的电池症状

出现磨损的电池

当你看看你的电池时,它会像你一样罢工,如果它尚未开始故障,很可能很快就会给你问题。电池时代越多,它们可以保留电荷的电荷越少,因为内部的金属相同,外部端子腐蚀的方式相同。电池可以保留的充电水平逐渐减小到无论交流发电机提供的功率如何提供多少,电池不能保留足够的电源以启动汽车。但是,有几个黑客可以继续使用旧电池。

You can scrub away corrosion from the battery terminals carefully by using a rag and then have someone jumpstart it. Run the car for a while and then turn it off. Try to restart the vehicle. If the vehicle starts, it means the corrosion was preventing it from transmitting power.

迟缓的发动机起动

当您的汽车慢曲柄时,您的电池充电系统要么有问题,电池腐蚀,或者当您的汽车停放时,电池有电气抽取。在寒冷的早晨,您还将在寒冷时经历更糟糕的卷曲问题,因为您的电池较弱。

Inconsistent Starts

Another sign of a bad battery is that you have inconsistent starts. It becomes difficult to predict whether the vehicle will start normally or stagger before it starts. When your car starts experiencing inconsistent starts, check the terminals and scrub away corrosion before deciding to replace the battery.

仪表板电池仪

Your dashboard battery gauge should always show a small charge even when the car is turned off. If the indicator doesn’t show any flowing energy within your vehicle, it means you either have a wiring transmission problem or your car battery is completely dead.

Interior lights and electrically powered accessories not functioning

当您的汽车未能转动挡风玻璃刮水器,灯或自动窗口时,这意味着您的电池完全排出。如果你设法jumpstartyour car but still have a problem operating the lights after you successively turn the car off, your battery needs a replacement.

然而,一个失败的交流发电机可以伪装,你认为你有一个终极电池。在您前往商店购买新电池之前,执行彻底的诊断以排除一个糟糕的交流发电机。

Read Also:How to Charge a Car Battery Without a Charger

Signs of a Dead Alternator

symptoms of a bad alternator

下面是一些常见的一个糟糕的交流发电机的迹象。

Flickering Lights

当您的交流发电机处于良好的工作状态时,无论您的驾驶速度如何,它都会保持明亮的灯光。因此,当您注意到您的前灯开始在路上更换速度时开始闪烁或调光,这意味着您的交流发电机不能再产生足够的电源。

弱电池或死电池

The alternator has to replenish the car battery’s energy. When you always have a weak battery, it could also mean that your alternator is not adequately charging the battery as it should when the car is running. However, be careful to confirm that you don’t have a weak or dead battery before blaming the alternator. You can check if the battery gauge on the dashboard indicates a strong charge even without turning on your vehicle. If it does, then your battery is fine. Your alternator is the problem.

In this case, your battery is always weak because your car accessories now draw energy from the battery instead of the alternator, thus, draining and leaving it empty.

不寻常的声音

交流发电机具有许多纺纱部分,当其中一个开始故障时,使奇怪的声音产生奇怪的声音。这些声音类似于抱怨或磨声。不好的交流发电机声音可以来自磨损的轴承或电压调节器,要求交流发电机增加充电频率。

磨削或抱怨和磨削声音与不断削弱的电池相连是您应该检查电池的指示。

Indicator Light

Most vehicles have a warning indicator light at their dashboards labeled “ALT” or “GEN.” When your alternator goes bad, one of the first warning signs is this light turning on. Although this light can turn on because of several reasons, if you pair it up with the other symptoms of a bad alternator listed here, the chances are that your alternator is not providing enough power to support the electrical accessories of your vehicle and to charge your battery.

Electric Failures

交流发电机是您汽车电力的主要来源。因此,每当你有一个交流发电机时,所有配件都似乎发生故障。您可能有您的音乐播放器吞咽磁盘,您的电源窗口卡住,您的仪表板灯,air conditioning以及依赖于电力故障的其他功能。

All the signs listed above warn you that you may need to replace your alternator to keep enjoying using your vehicle adequately. You take certain risks when you drive your car when it has a bad alternator or a bad battery.

Risks of driving with a bad alternator

A car can run with a bad alternator, but it means that your battery will support your vehicle’s power requirements. Since the battery will be using its reservoir energy without charging, it means that you only have limited driving time until the car shuts down. Therefore, you risk getting stranded on the road with a car that cannot power on because of a depleted battery and a dead alternator.

If you wish to prolong your driving distance to get to a mechanic to replace the alternator, turn off all the auxiliary accessories like the air conditioner, internal lights, and radio to save enough power to get to the repair shop.

用坏电池驾驶的风险

当您的电池模具时,您可以跳动您的汽车并驱动它,因为交流发电机将在路上支持车辆的电源要求。然而,交流发电机会产生大量的热量,并且这种产生的热量将长期损坏交流发电机。

Therefore, to avoid the expenses of buying a new alternator, avoid repeatedly jumping and driving your vehicle and buy a new battery.

Bad Alternator or Bad Battery, Easy Solved – YouTube

常见问题(常见问题)

Q: Can you jumpstart a car with a bad alternator?

Luckily, you can jumpstart your car when you notice that it has a bad alternator. However, you should drive the vehicle to the nearest car dealership to replace the alternator before the battery dies.

Q: Can a bad alternator kill a battery?

Yes, you still have a problem when you have a new battery and a bad alternator because a bad alternator can destroy a working battery when it charges it using too much voltage. Higher than recommended voltages lead to premature cell failure within the battery. It can also destroy the battery if it produces a ripple voltage that surpasses the rectifier.

Q: Do Alternators Fail Suddenly?

Most times, alternator failure occurs gradually over time, and you can notice the symptoms and replace them early. However, there are unique circumstances when an alternator can suddenly stop working. One of these situations is when the voltage regulator or the diodes inside the regulator fails. After noticing bad alternator diode symptoms like flickering headlights, you can test your alternator using a voltmeter. Switch it to a low setting on AC mode and test the battery. If they register any AC voltage, it means your alternator diodes are going bad.

When the voltage regulator fails, the alternator automatically stops transmitting electrical energy.

Q: How long will a car battery last without an alternator?

如果您在没有运行交流发电机的情况下开车,如果您有完全充电的电池,您的车辆只能在电池为空之前进行大约二十五英里。二十五英里的驾驶最多可达30分钟。

Final Words

Batteries and alternators are co-dependent components of a vehicle’s charging and electric system. The battery delivers electricity to the starter to kick start the engine operation. The alternator powers the vehicle and charges the battery to ensure there will be enough energy to start the car again after switching it off.

因此,区分电池和交流发电机之间的车辆电气问题可以混淆。然而,下次列出的症状足以在下次电池或交流发电机问题不良时诊断您的车辆。

Related Reviews:

铁托

Hi There, I am R. Hasan Tito, a mechanic, and owner of this website. My friend and I created this website to share our knowledge, expertise, and experience with our fellow mechanics' community and car users. I am a specialist and certified automotive mechanic (Both Heavy Commercial and Private Cars). I have been working as a mechanic for over fifteen years. I worked for a long time at Global Rebound Automotive companies (Toyota, TATA, BMW, Nissan, TVs, and Others ) as a Mechanic and Mechanics Supervisor.

Recent Posts

Baidu
map