Kia Sportage: Cooling System / Thermostat Repair procedures

Kia Sportage QL (2015-2025) Service Manual / Engine Mechanical System / Cooling System / Thermostat Repair procedures

Removal and Installation

Removal 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.	Disconnect the battery negative terminal.

2.	Remove the air cleaner. (Refer to Intake and Exhaust System - "Air Cleaner")

3.	Drain engine coolant so its level is below thermostat. (Refer to Cooling System - "Coolant")

4.	Disconnect the radiator lower hose (A).

Remove the water inlet fitting (A).

Tightening torque :

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

6.	Remove the thermostat (A).

Install in the reverse order of removal.

Install the thermostat with the jiggle valve upward.

8.	Fill the engine coolant.

9.	Start the engine and check for leaks.

10.	Recheck the coolant level.

Inspection

Immerse thermostat in water heated to over 95°C (203°F), then heat for at least 3 minutes to check valve lift.

•	Do not use water below 95°C (203°F).

•	Do not directly heat unit as this will damage thermostat.

Check the valve opening temperature.

Valve opening temperature : 88°C (190°F)

Full opening temperature : 100°C (212°F)

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

Check the valve lift.

Valve lift : 8 mm (0.3 in) or more at 100°C (212°F)

If the valve lift is not as specified, replace the thermostat.

Water Temperature Control Assembly Repair procedures

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Thermostat Troubleshooting

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

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