mitsubishi Workshop Repair Guides

Mitsubishi Workshop Service and Repair Manuals

Thermostat Housing, Engine Cooling > < Engine Controls - Rough Idle/DTC's P0300-P0306|Page 2184
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1. Immerse the thermostat in water, and heat the water while stirring. Check the thermostat valve opening temperature.

Standard value: 

2. Check that the amount of valve lift is at the standard value when the water is at the full-opening temperature.

NOTE:  Measure the valve height when the thermostat is fully closed, and use this measurement to calculate the valve height when the thermostat
is fully open.

Standard value: 

Thermostat Housing, Engine Cooling > < Engine Controls - Rough Idle/DTC's P0300-P0306|Page 2184