Checking conditions

WARNING: This page is about a different car, the 1996 Volkswagen Jetta. However, it is still accessible from the selected car via links, so may be relevant.

The turbocharger and wastegate are an assembly. A faulty turbocharger must be replaced because it is not possible to repair using workshop equipment.

Requirements for proper turbocharger operation and achieving specified boost pressure:

No leaks from intake and exhaust systems
Wastegate control line is not blocked, loose or leaking
No engine or fuel injection mechanical malfunctions; for example, start of injection, fuel injectors and compression pressure
Engine oil temperature 80°C (176°F) minimum