When should car radiator fan come on

Under perfect conditions, the car engine produces much heat during combustion.

Should radiator fan come on when car starts

So, car manufacturers design a cooling system to prevent the engine from overheating. The primary purpose of the cooling system is to keep the engine at the optimal operating temperature.

However, some cooling system components are engineered to come on only when the engine is warmed up.

One of these components is the radiator fan. Therefore, something is wrong if the radiator fan runs when the engine is cold.

In this article, I’ll explain the possible reasons for this problem and the best solutions. By the time you get to the end, you will be able to answer the question, “Why is my radiator fan constantly running” and be able to proffer solutions.

What Causes the radiator fan runs when the engine is cold?

A radiator fan running when the engine is cold means there are one or more wiring issues somewhere in the vehicle.

However, other issues like a stuck open thermostat, malfunctioning ECM/ECU, lousy fan relay, and faulty coolant temperature sensor can be the leading cause.

Let’s look at these iss

when will the radiator fan turn on

when does the car radiator fan turn on