2002 — 2006
3.5L (VQ35DE) - 350GT/Premium
Petrol
While accelerating steadily in 2nd or 3rd gear, listen for any rattle from the engine bay, as the timing chain tensioners can sometimes show wear in higher-mileage VQ35DE engines.
Check this by finding an empty parking lot, turning the steering wheel to full lock in both directions, and listening for any clicking or binding sounds from the suspension bushings or ball joints.
Before turning the engine on, shift through all gears while stationary to ensure the automatic transmission engages smoothly without any delay or harsh 'clunking' into drive or reverse.
During your drive, pay close attention to the cooling gauge; ensure it stays steady, as these radiators can develop hairline cracks in the plastic end-tanks over time.
Usually marks the point where the original suspension struts begin to soften, and it is a good time to inspect the cooling system hoses.
Often the window where the alternator and starter motor might begin to show their age, and engine mounts may require inspection for vibrations.
Typically when the catalytic converters might begin to reach the end of their service life, and a deeper look at the transmission fluid condition is recommended.
Check the engine oil level and color; the VQ35DE is a great engine, but it thrives on clean, high-quality synthetic oil.
Confirm the air filter is clean, as a restricted intake can affect the throttle body's performance over time.
Inspect the brake fluid for a healthy, clear, or light amber color to ensure the braking system remains responsive.
Review the history for any coolant flushes, as maintaining the coolant health is vital for the long-term longevity of the aluminium engine block.
Verify the condition of the drive belts; they are easy to inspect and replacing them preventatively saves you from being stranded.
Estimated repair costs if issues arise
If this component needs attention in the future, the estimated cost in NZ is reflective of the labour involved in replacing worn control arm bushings, which helps restore that crisp Infiniti handling.
Depending on the car's history, you might eventually need to budget for new gaskets if you notice a slight burning oil smell or minor seepage around the top of the engine.
If the plastic tanks start to show signs of age-related brittleness, it is common to consider a full radiator replacement to prevent overheating issues down the line.
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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