2009 BMW 328i N52B30 (E90)
E90 / Sedan, Coupe, Convertible / Global (varies slightly by region, primarily US, Europe, Asia)
N52B30Fiche exacte année/versionGold
Engine identity
Oils and fluids
Service and parts data
Common and chronic problems
- High-pressure fuel pump failure (N52 engine)
- Valve cover gasket leaks
- Cooling system issues (water pump and thermostat)
First checks
- Inspect cooling system for leaks
- Check oil consumption and look for oil leaks
- Verify fuel system pressure and operation
Avant de remplacer des pièces
- Save fault codes and freeze-frame data before clearing anything.
- Check engine oil, coolant and transmission fluid using the correct temperature and service procedure.
- Verify power, ground, connectors, hoses, leaks and live data before replacing expensive parts.
Important notes
- Engine and power output vary by market and emissions regulations.
- US market 328i used the 3.0L N52 engine delivering 230 hp; some European variants had higher output versions.
- Oil capacity includes filter change; use recommended synthetic oil for best performance.