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Home >> Chevrolet >> 2007 >> Optra5 LT, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine Cooling >> Diagnostic Information and Procedures >> Engine Fails To Reach Normal Operating Temperature
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Engine Fails To Reach Normal Operating Temperature

Checks Actions
The thermostat is stuck open or the wrong type. Install a new thermostat of the correct type and heat range.
The coolant level is below the MIN mark on the surge tank. Add sufficient coolant to raise the fluid to the specified mark on the surge tank.
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