Kia Optima: Inspection - Thermostat. Repair procedures - Cooling System - Engine Mechanical System - Kia Optima TF 2011-2019 Service ManualKia Optima: Inspection

1. Immerse the thermostat in water and gradually heat the water.

2. Check the valve opening temperature.

Valve opening temperature: 82 ± 1.5°C (179.6 ± 2.7°F)

Full opening temperature: 95°C (203°F)


If the valve opening temperature is not as specified, replace the thermostat.
3. Check the valve lift.

Valve lift : 8mm (0.3in.) or more at 95°C (203°F)
If the valve lift is not as specified, replace the thermostat.

Removal and Installation
Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, e ...

Thermostat. Troubleshooting
Troubleshooting   Symptoms Possible Causes Remedy Coolant leakage • From the thermostat gasket ...

See also:

Front Impact Sensor (FIS). Description and Operation
Description The front impact sensor (FIS) is installed in the Front End Module (FEM). They are remote sensors that detect acceleration due to a collision at its mounting location. The primary pur ...

Limp Home Function
1. Limp Home By TesterIf the PCM(ECM) detects the fault of the SMARTRA or transponder, the PCM(ECM) will allow limp home function of the immobilizer. Limp home is only possible i ...

Components and Components Location
Component Location 1. Horn switch 2. Horn relay (Engine room compartment) 3. Clock spring 4. Horn (Low) 5. Horn (High) ...

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