why does my Honda CR-V's temperature gauge go high after driving for a while

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the engine is cool before starting work.
• Disconnect the battery to prevent electrical issues.

2. Replace Thermostat

1. Drain the coolant from the radiator into a clean container.
2. Remove the thermostat housing by unscrewing the bolts (typically 10-12 Nm torque).
3. Take out the old thermostat and replace it with a new one, ensuring the orientation is correct.
4. Reattach the thermostat housing with new gasket or sealant as needed.

3. Check and Repair Cooling System

1. Inspect and replace any damaged hoses or leaks found during the diagnostic step.
2. Clean or replace the radiator if blockages were detected.
3. Ensure that the cooling fans are functioning properly; replace the fan motor if necessary.

4. Refill and Bleed Cooling System

1. Refill the radiator and reservoir with the recommended coolant type (typically a 50/50 mix of antifreeze and water).
2. Run the engine with the radiator cap off until the thermostat opens and air bubbles rise to the surface.
3. Add more coolant as necessary and replace the cap.

5. Final Checks

1. Reconnect the battery.
2. Start the engine and monitor the temperature gauge for stability during a test drive.