Tips Sahabat

When Should the Car Radiator Fan Spin? Check Here!

09 April 2025
Kapan Seharusnya Kipas Radiator Mobil Berputar? Simak Disini!

The radiator fan is part of the engine cooling system that functions as a cooler for the AC condenser. The radiator fan also serves to maintain the stability of the radiator water temperature so that it does not get too hot. In addition, the radiator fan also functions to distribute air to the engine so that the engine combustion process becomes optimal. The mechanism of the radiator fan does not rotate all the time. So when does the car radiator fan rotate? To answer that question, let's take a look at the following review.

When Should the Car Radiator Fan Rotate?

Before you know when the car radiator fan should rotate, you need to understand the types of car radiator fans first. Here are the complete types of radiator fans.

1. Radiator fan with fan belt drive

As the name suggests, this type of radiator fan uses the fan belt to drive it. This type of radiator fan will work when the car engine is turned on. When the car engine is just started, the radiator fan will automatically rotate.

2. Radiator fan with motor fan drive

For the second type, this radiator fan is driven with the help of a motor fan or dynamo. For this type, the radiator fan will not work directly when the car engine is just started.

This type of radiator fan has a very close relationship with ECU (Engine Control Unit). Data from the refrigerant pressure sensor and engine coolant temperature will be used by the ECU to determine when the radiator fan should stop or rotate.

The refrigerant pressure sensor functions as a gauge for AC freon pressure in the hose. Meanwhile, the engine coolant temperature functions as a gauge for the radiator water temperature. These sensors will monitor the engine condition and will send data directly to the ECU.

Thus, the ECU will give a command to rotate the radiator fan if there is any change in data. So it can be concluded that the car radiator fan rotates under the following conditions.

Condition of the car AC in the OFF state

When the car AC is off, the ECU will only use data from the engine coolant temperature sensor. The data provided will be processed by the ECU into the radiator water temperature value. When you just start the car engine, the temperature produced is below 95 degrees Celsius.

This temperature will not cause the radiator fan to rotate, because the radiator fan only rotates when the radiator water temperature is above 95 degrees Celsius.

If the radiator water temperature increases, the ECU will send an active command to the relay so that the radiator fan can rotate. The speed of the radiator fan rotation depends on the radiator water temperature.

Read Also: 6 Causes of Car Radiator Fan Not Rotating & Solutions

Condition of the car AC in the ON state

When the car AC is on, both sensors, namely the refrigerant pressure sensor and the engine coolant temperature sensor, will send data to the ECU.

When you turn on the car AC, there will be an increase in refrigerant pressure. In addition, the ECU will also analyze the signals provided by the blower fan. The signals read by the ECU will later be interpreted that the car AC cooling system is working. Thus, the radiator fan will rotate immediately.

After reading the above review, you now know when the car radiator fan should rotate. If the radiator fan keeps rotating, it is certain that there is a problem with the AC condenser, fan control unit, or damage to the engine coolant temperature sensor. Therefore, you need to contact the nearest Daihatsu dealer for proper handling.

Others Tips Sahabat
penyebab serta cara mengatasi lampu indikator aki menyala
Causes and How to Overcome the Battery Indicator Light Turning On
For car owners, the speedometer panel is certainly familiar. On that panel, there is a battery light which serves as an indicator of the car's electrical charging. If the , it can be assured that ther
Berapa Biaya Cat Mobil Full Body? Cek Estimasi dan Pertimbangannya
How Much Does a Full Body Car Paint Cost? Check the Estimate and Considerations
Knowing how much it costs to paint a full body car is very important, especially if you intend to make body repairs and repainting. As is known, old and scratched car paint can reduce the aesthetic va
Foto SIM Pakai Baju Apa? Simak Syarat dan Ketentuannya di Sini!
Photo of SIM What Clothes to Wear? Check the Requirements and Conditions Here!
Do you already know what clothes are appropriate for the driver's license photo? If you don't know yet, just pay attention to the requirements and conditions in the following discussion.

Requireme

Cara Cek Pajak Kendaraan Jakarta Online Terbaru
4 Latest Ways to Check Vehicle Tax Online in Jakarta
In today's digital era, the government is making it easier for the public to access public services, including vehicle tax checks. Jakarta residents no longer need to hassle with going to the Samsat o
© Copyright 2025 PT Astra Daihatsu Motor. All rights reserved
Privacy Policy
Contact Us