Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSMITSUBISHI1989SIGMA AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESPECIFICATIONSREPLACEMENT INTERVALS
1989 Mitsubishi Sigma Automatic
Replacement Intervals
1989 Mitsubishi Sigma AutomaticSECTION Replacement Intervals
REPLACEMENT INTERVALS
| Component | Interval (Miles) | ||||
|---|---|---|---|---|---|
| Mirage | |||||
| Air Filter | 30,000 | ||||
| Automatic Transaxle Fluid | 30,000 | ||||
| Belts | 30,000 | ||||
| Coolant | 30,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | |||||
| Non-Turbocharged | 7,500 | ||||
| Turbocharged | 5,000 | ||||
| Spark Plugs | 30,000 | ||||
| Timing Belt | 60,000 | ||||
| Starion | |||||
| Air Filter | 30,000 | ||||
| Automatic Transmission Fluid | 30,000 | ||||
| Belts | 30,000 | ||||
| Coolant | 30,000 | ||||
| Fuel Filter | 50,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | 5,000 | ||||
| Rear Axle Fluid | 30,000 | ||||
| Spark Plugs | 30,000 | ||||
| Galant | |||||
| Air Filter | 30,000 | ||||
| Automatic Transaxle Fluid | 30,000 | ||||
| Belts | 30,000 | ||||
| Coolant | 30,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | 7,500 | ||||
| Spark Plugs | 30,000 | ||||
| Timing & Balance Shaft Belts | 60,000 | ||||
| Montero | |||||
| Air Filter | 30,000 | ||||
| Automatic Transmission Fluid | 30,000 | ||||
| Belts | 30,000 | ||||
| Coolant | 30,000 | ||||
| Front & Rear Axle Fluid | 30,000 | ||||
| Fuel Filter | 50,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | 7,500 | ||||
| Spark Plugs | 30,000 | ||||
| Timing Belt | 60,000 | ||||
| Transfer Case Fluid | 30,000 | ||||
| Pickup | |||||
| Air Filter | 30,000 | ||||
| Belts | 30,000 | ||||
| Coolant | 30,000 | ||||
| Front & Rear Axle Fluid | 30,000 | ||||
| Fuel Filter | 50,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | 7,500 | ||||
| Spark Plugs | 30,000 | ||||
| Timing Belt | 60,000 | ||||
| Precis | |||||
| Air Filter | 30,000 | ||||
| Belts | 30,000 | ||||
| Brake Fluid | 30,000 | ||||
| Coolant | 30,000 | ||||
| Fuel Filter | 50,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | 7,500 | ||||
| O2 Sensor | 50,000 | ||||
| Spark Plugs | 30,000 | ||||
| Timing Belt | 60,000 | ||||
| Transaxle Fluid | 30,000 | ||||
| Sigma | |||||
| Air Filter | 30,000 | ||||
| Automatic Transaxle Fluid | 30,000 | ||||
| Belts | 30,000 | ||||
| Coolant | 30,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | 7,500 | ||||
| Spark Plugs | 30,000 | ||||
| Timing & Balance Shaft Belts | 60,000 | ||||
| Van/Wagon | |||||
| Air Filter | 30,000 | ||||
| Belts | 30,000 | ||||
| Coolant | 30,000 | ||||
| EGR Valve (1) | 50,000 | ||||
| Fuel & Vapor Hoses | 50,000 | ||||
| Oil & Filter | 7,500 | ||||
| O2 Sensor (1) | 50,000 | ||||
| Spark Plugs | 30,000 | ||||
| Spark Plug Wires (1) | 60,000 | ||||
| Timing Belt | 60,000 | ||||
| Vapor Canister | 100,000 | ||||
|
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.