CARFIX

Mitsubishi Diamante 6G73 GDI Sedan (1997-2002) (1997–2002)

The Mitsubishi Diamante was a popular, comfortable, and relatively affordable choice for families in New Zealand seeking a larger sedan. This vehicle wiki provides helpful information for Diamante Base model owners regarding maintenance, potential issues, and areas to monitor for Warrant of Fitness (WOF) inspections.

Parts for the Mitsubishi Diamante 6G73 GDI Sedan (1997-2002)

Known issues

Owners of Mitsubishi Diamante Base models in New Zealand should be aware of potential issues including automatic transmission problems (delayed shifting), power steering leaks, and EGR valve failures causing poor idling. These issues are more likely to arise between 150,000 and 250,000 kilometers.

WOF tips

When taking your Mitsubishi Diamante for a Warrant of Fitness (WOF) inspection, pay close attention to potential watch points. Specific areas to check include rust around the rear suspension mounts and any signs of leaks from the brake proportioning valve. Addressing these issues proactively can help ensure a successful WOF.

About the Mitsubishi Diamante 6G73 GDI Sedan (1997-2002)

Maintenance & Reliability Insights for Your Diamante

The Mitsubishi Diamante, while offering a smooth ride and spacious interior, can experience certain issues as it ages. Staying informed about preventative maintenance and common problems is crucial for keeping your Diamante on the road.

Standard Fitment Considerations

When sourcing replacement parts or performing maintenance, ensure components like brake pads, filters (oil, air, fuel, cabin), and suspension components are appropriate for standard New Zealand fitment. Checking compatibility with your specific Diamante model is always recommended.

Potential Trouble Spots

Owners often report a few recurring issues beyond a certain mileage:
• Automatic Transmission: Be aware of potential delayed or harsh shifting, which can indicate transmission wear, particularly around 150,000-250,000km.
• Power Steering Leaks: Regularly inspect the power steering system for leaks, as these are not uncommon.
• EGR Valve Failures: Pay attention to idling quality. A faulty EGR valve can lead to poor idling and may require replacement around the typical mileage mentioned above.

DIY Considerations

Maintaining a Mitsubishi Diamante can be moderately DIY-friendly. Tasks like oil changes and filter replacements are generally straightforward. However, more complex repairs, such as transmission work or power steering system repairs, may require professional assistance.

Questions owners ask

What are the most common problems with a 1997-2002 Mitsubishi Diamante in New Zealand?
Owners of the 1997-2002 Mitsubishi Diamante often report issues with the automatic transmission, such as delayed or harsh shifting, typically appearing between 150,000 and 250,000 kilometers. Power steering leaks are also a common concern, as are EGR valve failures which can lead to poor idling.
What should I look out for during a WOF inspection for my Mitsubishi Diamante?
For your Mitsubishi Diamante's Warrant of Fitness (WOF) inspection in New Zealand, pay close attention to rust around the rear suspension mounts. Also, check for any signs of leaks from the brake proportioning valve. Addressing these issues proactively can help ensure a successful WOF.
Where can I get replacement brake pads for my 1997-2002 Mitsubishi Diamante in NZ?
CARFIX stocks 235 SKUs for the 1997-2002 Mitsubishi Diamante. You can find replacement brake pads, along with other essential components like oil, air, fuel, and cabin filters, and suspension parts, ensuring they are appropriate for standard New Zealand fitment.
How often should I service my Mitsubishi Diamante?
The recommended service interval for your Mitsubishi Diamante is every 10,000 kilometers. Regular servicing helps maintain its performance and can help identify potential issues before they become major problems.
Can I DIY an oil change on my 1997-2002 Mitsubishi Diamante?
Yes, tasks like oil changes and filter replacements on your 1997-2002 Mitsubishi Diamante are generally considered DIY-friendly. CARFIX also has 3 DIY videos available to assist you with common maintenance tasks.
My Mitsubishi Diamante is shifting roughly, what could be the problem?
Rough or delayed shifting in your Mitsubishi Diamante, especially if it's between 150,000 and 250,000 kilometers, often points to potential wear in the automatic transmission. It's recommended to have this inspected by a professional.