1998 LEXUS SC 2JZ-GE/1UZ-FE (Z30)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Timing belt replacement needed every 90,000 miles (SC 300)
• Potential electronic throttle body issues (SC 400)

First checks

• Inspect timing belt condition and replace if near interval
• Check transmission fluid level and condition

Before replacing parts

• 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

• SC 300 was primarily sold in markets like North America and Japan with the 2JZ-GE inline-6.
• SC 400 was fitted with the 1UZ-FE V8, mainly for North America and some global markets.
• Exact availability of trims and engines may vary by regional market and production month.