Kia Optima: Inspection - Thermostat. Repair procedures - Cooling System - Engine Mechanical System - Kia Optima TF 2011-2018 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 1.5C (179.6 2.7F)

Full opening temperature: 95C (203F)


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 95C (203F)
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:

To Reset at a Faster Speed
1. Push the RES/ACCEL switch and hold it. 2. Accelerate to desired speed and release the RES/ACCEL switch. While the switch is pressed, the vehicle will gradually gain speed. ...

Vehicle certification label
The vehicle certification label attatched on the drivers side center pillar gives the vehicle identification number (VIN). ...

Inspection
1. Turn the ignition switch OFF. 2. Disconnect the RCV control solenoid valve connector. 3. Measure resistance between the valve terminals 1 ...

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