1999 Aston Martin DB7 AJ-26S4/AJ-28S4 (DB7)

Engine identity

Oils and fluids

Service and parts data

Common and chronic problems

• Electrical gremlins in early DB7s
• Coolant system leaks around thermostat housing

First checks

• Inspect timing chain tensioners
• Check supercharger belt tension for Vantage models

Vor dem Teiletausch

• 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

• 1999 DB7 was offered as naturally aspirated and newly introduced supercharged Vantage version in global markets.
• Some transmission variations reflect market-specific regulations, with ZF automatics being rarer in 1999.