Kia Optima: Removal and Installation - Thermostat. Repair procedures - Cooling System - Engine Mechanical System - Kia Optima TF 2011-2024 Service ManualKia Optima: Removal and Installation

Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat.
1. Drain engine coolant so its level is below thermostat.
2. Disconnect the radiator lower hose (A).

3. Remove water inlet fitting (C), gasket (B) and thermostat (A).

Tightening torque :

7.8 ~ 11.8N.m (0.8 ~ 1.2kgf.m, 5.8 ~ 8.7lb-ft)


4. Installation is reverse order of removal.
Install the thermostat with the jiggle valve upward.
When assembling the thermostat, place the thermostat on the housing with a protrusion of thermostat matching with a groove of the housing and install the gasket and inlet fitting. Be careful the thermostat doesn’t get out of the groove on the housing.
5. Fill the engine coolant.
6. Start the engine and check for leaks.
7. Recheck the coolant level.

Thermostat. Repair procedures
...

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 (17 ...

See also:

Inspection
Throttle Position Sensor (TPS) 1. Connect the GDS on the Data Link Connector (DLC). 2. Start the engine and measure the output voltage of TPS 1 and 2 at C.T. and ...

Remote keyless entry system operations
Type A Type B Lock (1) All doors are locked if the lock button is pressed. If all doors (and trunk) are closed, the hazard warning lights will blink once to indicate that all doors (and tru ...

Diagnosis procedure by using diagnostic device
As manual for diagnosis methods by using diagnosis device, the main contents are as follows: 1. Connect self-diagnosis connector(16pins) located in the lower of driver side crash pad to ...

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