1999 NISSAN Altima KA24DE/VG33E (L30)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing belt wear on VG33E V6
• Intake manifold cracking (VG33E) causing coolant leaks
• Transmission fluid leaks on automatics

First checks

• Check timing belt condition on V6 models
• Inspect for coolant leaks at intake manifold
• Verify proper transmission fluid level and condition

Antes de cambiar piezas

• 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

• Engines and specifications vary by market; KA24DE primarily for US, VG33E used in Canada and other markets.
• Timing belt replacement is critical on V6 to avoid engine damage.