Humming noise from engine probably causes
Driving a car with an engine that makes a buzzing sound is very worrying. If the sound can disappear along the way, it would be good. What if the buzzing sound continues and the hum continues to get louder over time?
Of course, we cannot ignore this. We must immediately inspect the buzzing noise so that the trip will be comfortable and safe.
The sound of a car engine buzzing is indeed a frequent occurrence, there is a buzzing when idling, some buzzing when the AC is on, or a buzzing engine noise in all conditions..
The most common factor that causes engine hums is that the car goes through floods, wet, and muddy conditions, or that the component is too old and it's time to replace it.
The buzzing sound in the car engine mostly occurs in engine components that use bearings. There is also a buzzing engine sound that appears due to the adjustment of the timing belt that is too tight.
For more details, the following article will explain what causes the hum of a car engine to hum that often occurs.
1. Worn-out alternator bearings
The cause of a car engine hum that usually occurs is worn-out alternator bearings. Typically, the service life of the Alternator bearing is quite durable (long life).
Sometimes, we cannot avoid several conditions can cause damage the alternator bearings. Either when driving or doing maintenance. So that the alternator bearings become worn/obliterate and cause the engine to hum.
Here are some conditions that can cause the alternator bearing to wear-out :
- The V-Belt alternator adjustment is too tight and does not conform to the tightness recommended by the automaker.
- Driving through wet, muddy, and dirt roads or even frequently through floods.
- The alternator bearings have been used for a long time and need to replace.
2. Worn-out bearing belt adjuster
The next thing that often causes the car engine to hum is the belt adjuster's worn-out bearing (the bearing to adjust the tension of the V-belt).
For bearings that cause a humming noise, the engine has the same general conditions, wear and tear. Even on the inside, it is often accompanied by dirt due to rust and eroded ball bearing debris.
3. Worn-out AC Compressor bearing
The next cause of the car engine humming noise is worn-out AC compressor bearings. Buzzing sounds due to worn/obliterated AC compressor bearings often appear when the Air Conditioner (AC) is turn on, even so, it does not rule out the noise also occurs when the engine is idling.
To be sure, you can try listening to the hum by turning on or off the air conditioner. If the air conditioner is on and a buzzing sound occurs from the compressor, you can be sure that the AC compressor bearing is worn/obliterated.
4. Worn-out power steering pump
The next cause that makes the car engine hum is worn-out power steering pump. The buzzing sound that occurs due to worn-out power steering pump often heard when the steering wheel is turned and will get louder if the steering wheel is held to one side only.
The power steering pump works to pump the power steering oil. Dirty, insufficient or even exhausted power steering oil will damage and wear out the power steering pump components.
The wear and tear that occurs in the power steering pump cause a loud buzzing sound, even in some conditions the steering wheel feels heavy when rotated.
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5. Timing belt adjustment is too tight or too loose
The next cause of the car engine hum is from the timing belt. Yes, the timing belt that does not fit properly, can cause an engine problem. Besides making the engine abnormal when running, the engine sound will also hear buzzing and harsh.
The car engine buzzing because of the timing belt is common when the timing belt adjustment is too tight, or a half-tooth slippage occurs during installation.
6. Worn-out water pump bearings
The last thing we know to be the cause of the car engine buzzing is the water pump. The water pump is an engine component used to pump radiator cooling water to circulate inside the engine.
Inside the water pump, there are bearings so that the pump rotation becomes smooth. The bearings in this water pump can also wear out and become obliterated, causing the engine to hum loudly.