Hyundai Sonata: Thermostat. Repair procedures - Cooling System - Engine Mechanical SystemHyundai Sonata: Thermostat. Repair procedures

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

4.
Installation is reverse order of removal.
Install the thermostat with the jiggle valve upward.
5.
Fill the engine coolant.
6.
Start the engine and check for leaks.
7.
Recheck the coolant level.

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.

    Water pump. Troubleshooting
    Troubleshooting Water Pump Symptoms Possible Causes Remedy Coolant leakage • From the bleed hole ...

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

    See also:

    Compass Mirror. Description and Operation
    Function 1. Push the A button lower of the rear view mirror to turn on the function of the compass mirror so that displays a sign of a direction on the small board in ...

    SRS Care
    The SRS is virtually maintenance-free and so there are no parts you can safely service by yourself. If the SRS air bag warning light "" does not illuminate, when you turn the ignition on ...

    Description and Operation
    Description The SMART KEY system is a system that allows the user to access and operate a vehicle in a very convenient way. To access the vehicle, no traditional key or remote control unit i ...