How to Bleed the Radiator on a Peugeot 405
After you have flushed the system on a Peugeot 405 it is very important to bleed the radiator. This is because air can become trapped inside the system causing additional problems with both the cooling cycle and the water pump.
What You Will Need
- Radiator Fluid
- Floor Jack
- Allow the engine of the vehicle to completely cool.
- Lift the front end of the vehicle off the ground with your jack.
- Place the floor jack at the front jack point, which is located behind the radiator.
- Remove the radiator cap from the top of the radiator by pressing down on the cap and twisting it counterclockwise.
- Take note of the level of coolant in the radiator.
- Start the engine and run it long enough so that it reaches a normal operating temperature.
- Periodically check the level of the coolant.
- Allow engine to run for approximately 15 minutes after it has warmed up. This should allow most of the trapped air to bleed out of the system.
- Turn off the engine of the vehicle and allow to cool.
- Refill with coolant if the coolant levels are too low.
- Replace the radiator cap.
- Use the floor jack to lower the vehicle back to the ground.
Additional Information
- Any trapped air will be forced out of the vehicle through the radiator cap as the coolant cycles through the vehicles system. As the air is released, the coolant levels will fall. This indicates that the trapped air has been released.