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Replace a Spare part Radiator fan – a defective one or if the limit of use has been already reached. Find out useful information about Radiator fan

Malfunction of the engine cooling system fan
  • mechanical damage;
  • the fan control unit fault;
  • open electrical contact;
  • failure of the unloader relay.
Symptoms of the engine cooling system fan faults
  • engine overheating;
  • reduction of engine power at high speeds;
  • the radiator fan sensor readings;
  • indicator «Check Engine» alarm on the dashboard.
Causes of the engine cooling system fan malfunctions
  • overload of fan motor;
  • excessive voltage in the system;
  • failure of the cooling system fuse;
  • thermostat failure;
  • short circuit or wire burnout;
  • clogged air filter;
  • the destruction of the grille;
  • ingress of dust, dirt or foreign objects into the system.
  • malfunction in the vehicle software;
  • failure of the fan sensor.

First, check the condition of the fan. It must be connected to the circuit with a voltage of 12-14 V. The working mechanism gains the maximum speed in 2 seconds.

During normal operation of the mechanism the wiring is checked. To do this, connect the voltage at one end of the wire and test it on another with a voltmeter.

It is also necessary to analyze the motor temperature sensor. The cooling system fan should switch on automatically after the motor has reached a temperature of 92 °C. The second working phase begins after the mark of 99-104 °C. If the system does not turn on with the operating fan, the sensor needs to be replaced.

The timely replacement of the air filter and radiator grille state also affect the fan operation.

The cooling fan does not have a clearly defined service life. With careful use of the car, it can perform well during the entire vehicle life.

Repair and replacement of the cooling system fan

The fan in most car models is installed in front of the radiator. Wiring is considered the most vulnerable point of the system. If necessary, a complete replacement of it is made.

In the case of the blades and the axis clogging, the system is disassembled, cleaned and lubricated. Destructed or damaged relay and the drive fan blades can be replaced by the same diameter parts. Nevertheless, in case of mechanical damage or fault of the control unit you need to install a new part and calibrate the entire system.

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