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

Being an environmental component, engine coolant system fan is installed to speed the passage of air through the radiator core system. This provides a better heat removal from the engine coolant to the environment. System operation is essential when idling or driving at a slow speed. In these cases, the rate of air flow is not sufficient to cool the motor vehicle in full measure.

The design of fans is a construction of axial fans, in which in order to reduce the noise, the impeller blades are situated unevenly. In order the airflow inside the fan to distribute evenly, the fan blades are bent. The fan is started by motor drive or due to an optional electric motor, which is powered by in vehicle network.

This mechanism is installed in the engine cooling radiator, in the engine compartment. Moreover, you can install more fans in the cooling system of the vehicle. It must be said that the lack of heat removal from the motor vehicle may cause deterioration of lubricant. And this can result in details’ overheat and engine oil burning-out. Thus problems with the fan will increase the wear of its parts, as well as will greatly reduce the fuel mixture.

Another extreme can be a strong cooling of the details that affect the deterioration of the mixture formation and condensation of fuel particles on the cylinder walls. Usually, the result of the under cooling is the reduction of engine power and contamination of the oil channels. If you need to buy a new engine coolant system fan, you need to look through online catalogues of spare car parts. Whatever you need - manifold, joint disk or another car part, you can always find them in our online store at reasonable prices.

Cooling Fan (Radiator Fan) for MERCEDES-BENZ C-CLASS (W202), FIAT 500 (312), VW LT 28-46 II Box (2DA, 2DD, 2DH)

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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