7 Signs of A Failing Alternator

01 Aug 2018

7 Signs of A Failing Alternator

The entire electrical system of most vehicles depends on the alternator. The alternator is a key component in all vehicles such as tractors, loaders, trucks and many others. An alternator makes use of the mechanical energy from the powerfully rotating crankshaft and converts it into useful electricity which is then used to power the entire electrical system which includes the headlights, turn signals, battery charging, entire air conditioning system and mobile charging etc.
When an alternator starts to fail or does not work appropriately, it can create a domino effect of electrical problems that can ultimately cause a breakdown.
How will you know that your alternator is failing?
Here are seven signs of a failing alternator, which you should watch out for.

1. Dim headlights
Dim or flickering headlights indicate towards the bad alternator it means that your alternator may not be working correctly. An alternator supplies the power to the headlights, so dim lights usually indicates the alternator is struggling to perform.

2. Dead Battery
A bad alternator can cause the battery to drain out because when the alternator goes bad, it fails to recharge the battery. On top of that, the electrical power that was supposed to be provided by the alternator, now has to be taken from the battery.
If your battery does not charge and has gone dead, you should check the alternator when replacing the battery.

3. Warning Lights of the Alternator
The alternator warning lights is dedicated to signaling an alternator issue in your vehicles.
If the indicator lights up, it means there is an issue with powering the battery. This may be either because of a non-working alternator or because your alternator has worn out.

4. Strange Noise
Sometimes a failed alternator can cause some of the bearings to fail in the vehicle’s engine, creating unusual rattles. The alternator may be the culprit, especially if some of the other symptoms mentioned in this article are also present.
5. Other Electrical Issues
All electrical systems that takes power from the alternator such as power windows, power locks, dashboard lights, air conditioning and some others. When the alternator does not work correctly, these electrical components are also affected by a failed alternator.

6. Need to jump start the vehicle frequently
Many vehicles start stalling frequently and need to be jump started. This is a common sign of a failed alternator. To start your vehicle, the battery provides power to crank the engine. The alternator’s function is to make sure the battery stays charged, by converting the rotational energy of the shaft to electricity. A bad alternator will fail to keep the battery topped up and the battery will soon drain out after multiple starts, needing you jump start it.


7. Stall vehicle or has difficulty starting
The alternator also provides power to the spark plugs that ignite the gasoline in your engine. When the alternator has failed, its power supply may not be enough for the spark plug to ignite the fuel, which will stall the engine while running or have trouble starting.
Ignoring this symptom can lead to further complications!

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