Checking the turbocharger (Peugeot 406)

The turbocharger cannot be repaired and is replaced as a whole unit.

1. With the turbocharger removed, inspect the turbocharger housing for cracks or other damage.

2. Turn the turbine at maximum speed and check that the turbine rotates smoothly. Check the condition of the turbine blades and compressor wheel.

3. If the exhaust passages are contaminated with oil, the turbocharger shaft oil seal may be faulty.