If the Car Engine Vibrates Continuously When the AC is Turned On, It's Best to Check This Component

When the car's Air Conditioner (AC) is turned on for the first time, Daihatsu friends will definitely feel the car engine vibrating. This is actually normal as long as the vibration is not too loud and continuous. Because if the vibration is excessive and continuous, it indicates damage to the cabin cooling components of the car.

Excessive vibration certainly not only reduces comfort while driving. The problematic part can also damage other supporting components. Therefore, before addressing the issue of the vibrating car engine when the AC is turned on, it is important to know the main cause.

Here are some common causes that are often found and should be checked and replaced immediately.

There is Damage to the AC Compressor Component

The compressor is the main component of the car's Air Conditioner system. This component functions to compress and circulate refrigerant in the car's AC system.

If the compressor has problems, such as wear on the bearing or damage to the internal parts, this will cause vibrations felt in the car engine. The vibration is even more pronounced when the AC is turned on because the compressor works harder than usual.

Read Also: 12 Causes of Car AC Not Cold and Maintenance Solutions

AC Pulley Rotation Starts to Become Unbalanced

In the AC Compressor, there is a Pulley that connects the Compressor to the engine via a Belt. If the Pulley is unbalanced or damaged, the resulting vibration will be transmitted to the car engine, which becomes the source of excessive vibration when the AC is turned on. Even the imbalance of the AC Pulley can vary, ranging from damage to the pulley itself or improper installation.

AC Belt Adjustment is Loose or Damaged

The AC belt connects the engine with the AC compressor and other components in the car's AC system. If the AC belt is loose, worn, or damaged, vibrations will usually occur when the engine is running. The vibrations become more pronounced due to the increased engine load and the belt working harder to drive the AC compressor.

Radiator Fan is Not Functioning Optimally

The radiator fan functions to cool the engine and components of the car's AC system. If the radiator fan is not functioning properly due to dirt or damage, it will also cause excessive vibrations to compress and circulate the refrigerant.