What is the problem when the car cooling fan rotates slowly?
1 Answers
Reasons for the fan slowing down: 1. Automatic speed control, where the speed is automatically reduced when the temperature is not high. 2. The fan may be damaged. The way to check is to see if it can effectively lower the CPU temperature. If not, there are two possible reasons: one is a faulty temperature probe, where the measured temperature is lower than the actual high temperature, preventing the fan speed from increasing, although this probability is very low. 3. Another possibility is that the fan is broken. Generally, do not add oil because the fan rotates at high speed and is mainly made of plastic. The oil commonly used is not suitable, and improper selection may cause issues like dissolution or adhesion. Of course, if it is a high-end metal bearing, oil can be added.