Mitsubishi Sigma 4G54 Sedan 73kW (1979-1980) (1979–1980)

Welcome to your comprehensive resource for maintaining your MITSUBISHI SIGMA Base. This guide provides valuable insights into common maintenance needs, potential issues, and helpful information to keep your vehicle operating at its best. While the Sigma Base might not have a widely celebrated heritage, responsible upkeep ensures its reliability and longevity.

Parts for the Mitsubishi Sigma 4G54 Sedan 73kW (1979-1980)

• Automatic Transmission Fluid (14)
• Gear Oil Gearbox (14)
• Engine Oil (13)
• Passenger Side Blade (12)
• Driver Side Blade (12)
• Radiator Coolant (11)
• Axle Gear Oil (11)
• Suspension Bush Front Sway Bar Mount (7)
• Suspension Bush Sway Bar Link (4)
• Suspension Bush Rear Control Arm (4)
• Brake Fluid (4)
• Steering Bush Steering Idler Front (3)
• Suspension Bush Rear Control Arm - Lower (3)
• Suspension Bush Radius Arm Front (3)
• Suspension Bush Front Control Arm - Lower (3)
• Steel Washer Sway Bar Link Front (2)
• Coil Spring Rear Standard Profile (2)
• Steering Rack End (2)
• Suspension Bush Rear Shock Absorber - Lower (2)
• Sump/Drain Plug (2)
• Thermostat (2)
• Oil Cap (1)
• Wiper Blade Front (1)
• Tie Rod End (1)
• Wiper Blade Rear (1)
• Shocks / Strut Rear (1)
• Shocks / Strut Front (1)
• Ball Joint Front (1)
• Suspension Bush Rear Control Arm - Upper (1)
• Bump Stop Front (1)
• Coil Spring Front Standard Profile (1)
• Steering Idler Arm (1)
• Tie Rod (1)
• Engine Oil Pan Gasket (1)
• Oil Pressure Switch/Sender (1)
• Oil Seal Crank Shaft Rear / Rear Main Bearing (1)
• Thermostat Housing Gasket (1)
• Reverse Lamp Switch (1)
• Radiator Cap (1)
• Temperature Sensor / Sender Coolant (1)
• Fan Clutch (1)
• Starter Motor (1)
• Alternator (1)
• Ignition Coil (1)
• Distributor Pick Up (1)

Known issues

While specific technical bulletins for the SIGMA Base weren't readily available, common issues often arise from general wear and tear associated with vehicle age and mileage. Keep an eye out for leaks in the cooling system, excessive play in the steering, worn suspension components, and any engine performance issues. Paying attention to routine maintenance as described helps mitigate potential problems.

WOF tips

During a Warrant of Fitness (WOF) inspection, key areas of focus will include the condition of the steering and suspension components (Tie Rod Ends, Suspension Bushes, Steering Idler Arm), brake operation, the integrity of the cooling system (checking for leaks), and the functionality of lighting (including the Reverse Lamp Switch). Proper maintenance as suggested in this guide will help ensure your SIGMA Base passes its WOF inspection.

About the Mitsubishi Sigma 4G54 Sedan 73kW (1979-1980)

Here's an overview of components commonly requiring attention on the MITSUBISHI SIGMA Base:
• Cooling System: Maintaining optimal engine temperature is crucial. Consider regular checks of the *Radiator Cap*, *Radiator Coolant*, and *Thermostat*. A functional *Fan Clutch* plays a crucial role in regulating temperature, and a faulty *Temperature Sensor/Sender Coolant* can lead to inaccurate readings and potential overheating.
• Steering & Suspension: Ensuring precise handling and a comfortable ride is paramount. Regularly inspect *Tie Rods*, the *Steering Idler Arm*, and *Suspension Bushes*, including the *Suspension Bush Radius Arm Front* and *Suspension Bush Front Control Arm - Lower*. Replace these components as needed to maintain proper alignment and minimize wear.
• Drivetrain: Keep your Sigma Base shifting smoothly. Monitor the *Automatic Transmission Fluid* level and condition. A faulty *Reverse Lamp Switch* should be promptly addressed for safety. Inspect *Oil Seal Crank Shaft Rear / Rear Main Bearing* for leaks, resolving any issues promptly to prevent engine damage.
• Engine Management: Ensure proper ignition and fuel efficiency. The *Ignition Coil* is a key component. Replacement might be needed over time. Similarly, the *Thermostat Housing Gasket* should be inspected periodically for leaks.
• Visibility: Proper visibility is critical for safety. Periodically replace the *Wiper Blade Rear* to ensure clear vision during inclement weather.

Questions owners ask

What are the common issues to look out for with a 1979-1980 MITSUBISHI SIGMA in New Zealand?

For a 1979-1980 MITSUBISHI SIGMA, common issues often stem from general wear and tear due to its age. Keep an eye out for leaks in the cooling system, particularly around the Radiator Cap, Radiator Coolant, and Thermostat. Excessive play in the steering, which could indicate worn Tie Rods, Steering Idler Arm, or Suspension Bushes, is another common concern. Also, monitor for any engine performance issues and check the Automatic Transmission Fluid level and condition for smooth shifting.

What should I check on my MITSUBISHI SIGMA 1979-1980 to ensure it passes its WOF in NZ?

To ensure your 1979-1980 MITSUBISHI SIGMA passes its WOF, pay close attention to the steering and suspension components. This includes inspecting the Tie Rods, Suspension Bushes (like the Suspension Bush Radius Arm Front and Suspension Bush Front Control Arm - Lower), and the Steering Idler Arm for any wear or excessive play. Also, verify the integrity of the cooling system for leaks, and confirm the functionality of all lighting, especially the Reverse Lamp Switch.

How often should I service my 1979-1980 MITSUBISHI SIGMA?

The recommended service interval for your 1979-1980 MITSUBISHI SIGMA is every 10,000km. Regular servicing helps maintain the vehicle's condition and address potential issues before they become major problems.

Where can I get cooling system parts like a Radiator Cap or Thermostat for my 1979-1980 MITSUBISHI SIGMA in NZ?

CARFIX stocks 135 SKUs for the 1979-1980 MITSUBISHI SIGMA. You can find essential cooling system parts like the Radiator Cap, Radiator Coolant, Thermostat, Fan Clutch, and Temperature Sensor/Sender Coolant through CARFIX in New Zealand.

What are the key steering and suspension components I should regularly inspect on my MITSUBISHI SIGMA 1979-1980?

For precise handling and a comfortable ride in your 1979-1980 MITSUBISHI SIGMA, regularly inspect the Tie Rods, Steering Idler Arm, and various Suspension Bushes. Specifically, check the Suspension Bush Radius Arm Front and Suspension Bush Front Control Arm - Lower for wear and tear. Replacing these components as needed will maintain proper alignment and minimise wear.

My 1979-1980 MITSUBISHI SIGMA's automatic transmission isn't shifting smoothly. What should I check?

If your 1979-1980 MITSUBISHI SIGMA's automatic transmission isn't shifting smoothly, the first step is to monitor the Automatic Transmission Fluid level and condition. Low or degraded fluid can significantly impact shifting performance. Also, ensure the Oil Seal Crank Shaft Rear / Rear Main Bearing isn't leaking, as this could lead to other issues.