The Mitsubishi Sigma became a familiar sight on New Zealand roads, offering a comfortable and relatively affordable mid-size car option. Whether you're a long-time owner or new to the Sigma, understanding its maintenance needs and potential problem areas is key to keeping it running reliably.
Like many vehicles of its age, the Mitsubishi Sigma can experience certain issues. Owners should be aware of these potential weak points:
• Automatic Transmission Issues: Be particularly mindful of the automatic transmission, especially in early models. Watch for slipping or rough shifting.
• Rust: Rust is a common concern, particularly in typical Mitsubishi locations. Careful inspection and rust prevention measures are recommended.
• Oil Leaks: Keep an eye out for oil leaks from the engine. Regular checks and maintenance can help prevent more serious problems.
These issues often become more apparent between 150,000 and 250,000 kilometers. Addressing them promptly can save you from more costly repairs down the line.
During your WOF (Warrant of Fitness) inspection, pay close attention to the following:
• Rust: Be aware of rust around the windscreen and sills, as these are common areas of concern.
• Steering Components: Ensure there is no excessive play in steering components. This is a critical safety factor.
The Mitsubishi Sigma carved its place as a practical and accessible choice for many New Zealand drivers. While it might not boast a rich motorsport heritage or groundbreaking engineering achievements, the Sigma provided dependable transport for families and individuals alike.
Considering Component Maintenance:
Maintaining your Sigma involves regular checks and potential replacements of key components. This can include:
• Drive Belts: Inspect the alternator drive belt for wear and cracking. Timely replacement prevents breakdowns.
• Ignition Leads: Ensure proper ignition by monitoring the condition of your ignition leads. Deterioration can lead to misfires.
• Universal Joints/Couplings: Front universal joints are subject to wear. Listen for clicking noises, a sign it's time for inspection.
• Seals: Keep an eye on the rear crankshaft oil seal for leaks, as well as front hub inner and differential pinion rear seals.
• Clutch System: Pay attention to the clutch cable and the clutch system itself for smooth operation. A heavy or slipping clutch should be addressed promptly.
• Cooling System: The water pump and fan clutch play a critical role in engine cooling. Check for leaks or unusual noises.
• Wheel Bearings: Rear wheel bearing kits/hubs when worn can cause instability and unusual noises. Regular checks are crucial.
• Distributor Pick Up: Ensure the distributor pick-up is functioning properly for optimal engine timing.
• Suspension: Inspect the rear control arm suspension bushes for wear or damage to maintain handling stability.
• Braking System: Regularly inspect the rear wheel cylinders to ensure proper braking performance.
• Wipers: Using a front wiper refill set ensures the best possible windscreen visibility, improving safety.
Important Notes: Remember to always refer to your owner's manual for specific maintenance recommendations and schedules.