2000 — 2001
2.8L V6 (M112)
Petrol
Check for rough idle or misfires during warm-up | Note: The M112 engine is notorious for vacuum leaks and failing MAF sensors, leading to erratic idling.
Observe gear shift smoothness | Note: The 722.6 transmission suffers from internal connector leaks (wicking oil into the wiring harness) and worn valve body solenoids.
Inspect the floor pans and wheel arches | Note: W202 models are prone to significant rust, especially in New Zealand's coastal environments.
Test steering responsiveness for 'loose' feel | Note: Worn ball joints and steering damper bushes are common and lead to poor handling and uneven tyre wear.
Ensure the first major service including spark plug inspection for the 12-plug M112 configuration.
Replace transmission fluid and filter; inspect harmonic balancer for cracks (common failure point).
Replace oxygen sensors and water pump; perform a full cooling system overhaul to prevent catastrophic engine overheat.
Monitor transmission electrical connector for oil weeping
Check and clean the Mass Air Flow (MAF) sensor regularly
Verify integrity of vacuum hoses to prevent fuel mixture issues
Perform annual underbody rust inspection and treatment
Inspect the harmonic balancer pulley for rubber degradation
Estimated repair costs if issues arise
Always use genuine Bosch or VDO units; cheap aftermarket sensors fail prematurely.
Often triggered by fluid wicking; requires specialist transmission shop repair.
Budget for a full front-end overhaul to restore factory handling.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer