2003 — 2006
3.8L V6 (6G75)
Petrol
Listen for a high-pitched whirring or cycling pump noise from the driver-side engine bay every few brake presses. | Description: The Hydraulic Brake Booster (HBB) / ABS Accumulator is a notorious failure point. If the pump cycles too frequently, the unit is failing; a new assembly is extremely costly in NZ.
Cycle the Super Select II lever through all modes (2H, 4H, 4HLc, 4LLc) and ensure the dash lights stop flashing and turn solid. | Description: Vacuum actuators and switches often fail due to lack of use, leading to the 'flashing green lights' error which can be difficult to diagnose and fix.
Check for blue smoke from the exhaust after idling for 5-10 minutes followed by a sharp throttle blip. | Description: The 6G75 3.8L V6 is prone to valve stem seal wear at higher mileages, leading to oil consumption and potential emissions failures.
Perform several tight turns on a flat surface and listen for clunking from the rear or vibration under acceleration. | Description: Rear differential mounting bushes and trailing arm bushes are common wear items that affect drivetrain stability and comfort.
Standard oil and filter change, tyre rotation, and full inspection of steering linkages and CV boots.
Replacement of differential oils (front/rear) and transfer case fluid. Inspect brake pads and clean throttle body.
Major service: Timing belt, tensioner, idlers, and water pump replacement. Replace long-life spark plugs (requires intake plenum removal).
Verify Timing Belt/Water Pump replacement history (critical every 100,000km or 5 years).
Inspect HBB (Hydraulic Brake Booster) for fluid leaks or motor fatigue.
Check upper and lower ball joints for play, especially if fitted with larger tyres.
Inspect transfer case switches and vacuum lines for perishing or corrosion.
Check for oil leaks at the rear camshaft seals and rocker cover gaskets.
Estimated repair costs if issues arise
The most common 'big ticket' repair; often requires a full genuine Mitsubishi unit replacement.
Standard preventative maintenance; the 3.8L is an interference engine, so this is non-negotiable.
Labour-intensive repair involving significant engine disassembly to resolve oil burning issues.
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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