Kia Cadenza: Cooling System / Thermostat Repair procedures

Kia Cadenza YG 2016-2025 Service Manual / Engine Mechanical System / Cooling System / Thermostat Repair procedures

Removal
   
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.
Drain engine coolant so its level is below thermostat.
(Refer to Cooling System - "Coolant")
2.
Disconnect the ratiator lower hose (A).

(Refer to Cooling System - "Radiator Hose")
3.
Remove the water inlet fitting (A) and the thermostat (B).

Inspection
1.
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.
2.
Check the valve opening temperature.

Valve opening temperature:
88±2°C (109.4±3.6°F)
Full opening temperature: 100°C (212°F)

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

Valve lift : 10mm (0.3937in.) or more at 95°C (203°F)

If the valve lift is not as specified, replace the thermostat.
Installation
1.
Place the thermostat in thermostat housing.
(1)
Install the thermostat with the jiggle valve upward.
(2)
Install a new thermostat (B).

2.
Install the water inlet fitting (A).

Tightening torque :
9.8 ~ 11.8N.m (1.0 ~ 1.2kgf.m, 7.2 ~ 8.7lb-ft)

3.
Connect the ratiator lower hose (A).

4.
Install the ratiator upper hose.
(Refer to Cooling System - "Radiator Hose")
5.
Fill with engine coolant.
6.
Start engine and check for leaks.
Thermostat Components and Components Location
Components 1. Water temperature control assembly2. Thermostat3. Water inlet fitting pipe ...

Thermostat Troubleshooting
Troubleshooting SymptomsPossible CausesRemedyCoolant leakage • From the thermostat gasket Check the mounting bolts • Check the torque of the mounting bolts • Reti ...

Other information:

Kia Cadenza YG 2016-2025 Owners Manual: Driving your vehicle


Be sure the exhaust system does not leak. The exhaust system should be checked whenever the vehicle is raised to change the oil or for any other purpose. If you hear a change in the sound of the exhaust or if you drive over something that strikes the underneath side of the vehicle, ha ...

Kia Cadenza YG 2016-2025 Owners Manual: Checking the amount of air conditioner refrigerant and compressor lubricant


When the amount of refrigerant is low, the performance of the air conditioning is reduced. Overfilling also has a negative influence on the air conditioning system. Therefore, if abnormal operation is found, have the system inspected by an authorized Kia dealer. WARNING - Vehicles eq ...

Copyright © www.kcadenzavg.com 2017-2025