CARFIX

Mitsubishi Debonair 6G72 (DOHC 24V) (1989–1992)

The Mitsubishi Debonair, especially the base model, offered a unique blend of Japanese luxury and reliability. While never a mainstream vehicle in many markets, it provided a comfortable and refined driving experience. This guide helps owners understand the maintenance needs and potential issues to keep their Debonair running smoothly.

Parts for the Mitsubishi Debonair 6G72 (DOHC 24V)

Known issues

Debonairs of this vintage can experience certain common issues, particularly around the 150,000-200,000 kilometer mark. Owners might encounter air suspension failures (if equipped, as this was more common in higher trim levels, but still a possibility), and electrical gremlins in the dashboard controls. Addressing these issues promptly can prevent further complications.

WOF tips

When taking your Debonair for a Warrant of Fitness (WOF) inspection, be sure to pay close attention to corrosion around the fuel filler neck and the condition of the rear suspension bushes. These are known weak points and require careful assessment.

About the Mitsubishi Debonair 6G72 (DOHC 24V)

The Mitsubishi Debonair offered a comfortable and refined driving experience for those seeking an alternative to more common luxury cars. For the base model, typical maintenance considerations include:
• Engine Maintenance: Regular oil changes are crucial – typically every 10,000 kilometers. Consider using a high-quality engine oil and replacing the engine oil pan gasket if leaks are observed. The timing belt idler is a wearable part that should be inspected and replaced according to the manufacturer's specifications.
• Transmission Care: The automatic transmission fluid (ATF) needs periodic replacement to ensure smooth shifting and prevent damage.
• Steering and Suspension: Maintaining the power steering system with the correct fluid is essential for effortless steering. The suspension bushes, specifically the rear control arm bushes, are subject to wear and may require replacement. Similarly, the tie rod ends are critical for steering precision and safety and should be inspected for play.
• Braking System: Regular brake maintenance includes inspecting the master cylinder, and possibly replacing the master cylinder kit when servicing the brake system. Brake caliper kits for the front and wheel cylinder repair kits for the rear are important for addressing brake fluid leaks and maintaining optimal braking performance.
• Gearbox: Gear oil replacement in the gearbox helps maintain smooth gear changes and prolongs the life of the transmission.

Questions owners ask

What are the common WOF failure points for a 1989-1992 Mitsubishi Debonair in New Zealand?
When preparing your 1989-1992 Mitsubishi Debonair for a Warrant of Fitness (WOF) inspection, pay close attention to corrosion around the fuel filler neck. Additionally, the condition of the rear suspension bushes is a known weak point and requires careful assessment, as wear in these components can lead to WOF failure.
How often should I change the engine oil in my Mitsubishi Debonair (1989-1992)?
For your 1989-1992 Mitsubishi Debonair, regular engine oil changes are crucial. The recommended service interval is typically every 10,000 kilometers. It's advisable to use a high-quality engine oil to ensure optimal engine performance and longevity.
Where can I get replacement rear control arm bushes for my 1989-1992 Mitsubishi Debonair in NZ?
CARFIX stocks 69 SKUs for the 1989-1992 Mitsubishi Debonair. You can find replacement rear control arm bushes, along with other suspension components like tie rod ends, on the CARFIX website or by contacting our customer service team.
What are the common issues to look out for in a high-mileage 1989-1992 Mitsubishi Debonair?
Owners of 1989-1992 Mitsubishi Debonairs, especially those approaching or exceeding 150,000-200,000 kilometers, might encounter air suspension failures (if the vehicle is equipped with it) and electrical gremlins in the dashboard controls. Addressing these issues promptly can prevent further complications and maintain the vehicle's comfort and functionality.
What maintenance is required for the braking system on my 1989-1992 Mitsubishi Debonair?
Regular brake maintenance for your 1989-1992 Mitsubishi Debonair includes inspecting the master cylinder. When servicing the brake system, you might need to replace the master cylinder kit. For addressing brake fluid leaks and maintaining optimal braking performance, brake caliper kits for the front and wheel cylinder repair kits for the rear are important components to consider.