why does my Skoda Octavia's fan keep running after I turn off the engine

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to ensure safety while working on electrical components.
• Allow the engine to cool completely before starting any work.

2. Check and Replace the Engine Coolant Temperature Sensor

• Tools Required: Socket set, multimeter
• Locate the temperature sensor on the engine block.
• Disconnect the electrical connector from the sensor.
• Use a multimeter to test the resistance of the sensor. Replace if readings are outside specifications.
• Install a new sensor, ensuring it is properly seated and the connector is secure.

3. Test and Replace the Cooling Fan Relay

• Tools Required: Socket set, multimeter
• Locate the cooling fan relay in the fuse box.
• Remove the relay and use a multimeter to test for continuity.
• If the relay is faulty, replace it with a new one that matches the original specifications.

4. Inspect and Repair Wiring

• Tools Required: Wire stripper, electrical tape, multimeter
• Inspect the wiring harness for signs of wear, fraying, or corrosion.
• Repair or replace any damaged wires and connectors to ensure proper electrical flow.

5. Reconnect Battery and Test

• Reconnect the battery terminals securely.
• Start the engine and allow it to reach operating temperature, then turn it off to check if the fan continues to run.