Symptoms
|
Possible Causes
|
Remedy
|
Coolant leakage
|
| •
|
From the thermostat gasket
|
|
Check the mounting bolts
|
| •
|
Check the torque of the mounting bolts
|
|
| •
|
Retighten the bolts and check leakage again.
|
|
Check the gasket for damage
|
| •
|
Check gasket or seal for damage
|
|
| •
|
Replace gaskets and reuse the thermostat.
|
|
Cooled excessively
|
| •
|
Low heater performance (cool air blowed-out)
|
| •
|
Thermogauge indicates 'LOW'
|
|
Visually check after removing the radiator cap.
|
| •
|
Insufficient coolant or leakage.
|
|
| •
|
After refilling coolant, recheck.
|
|
GDS check&Starting engine
|
| •
|
Check connection of the fan clutch or the fan motor.
|
※ If the fan clutch is always connected, there will be a noise at
idle.
|
| •
|
Check the engine coolant sensor, wiring and connectors.
|
| •
|
Replace the componants.
|
|
Remove the thermostat and inspect
|
| •
|
Check if there are dusts or chips in the thermostat valve.
|
| •
|
Check adherence of the thermostat.
|
|
| •
|
Clean the thermostat valve and reuse the thermostat.
|
| •
|
Replace the thermostat, if it doesn't work properly.
|
|
Heated excessively
|
| •
|
Thermogauge indicates 'HI'
|
|
Visually check after removing the radiator cap.
|
| •
|
Insufficient coolant or leakage.
※ Be careful when removing a radiator cap of the overheated
vehicle.
|
| •
|
Check air in cooling system.
|
|
| •
|
After refilling coolant, recheck.
|
| •
|
Check the cylinder head gaskets for damage and the tightening
torque of the mounting bolts.
|
|
GDS check&Starting engine
|
| •
|
Check the fan motor performance as temperature varies.
|
| •
|
Check if the fan clutch slips.
|
| •
|
Check the water pump adherence or impeller damaged.
|
|
| •
|
Check the engine coolant sensor, wiring and connectors.
|
| •
|
Check the fan motor, the relay and the connector.
|
| •
|
Replace the fan clutch, if it doesn't work properly.
|
| •
|
Replace the water pump, if it doesn't work properly.
|
|
Immerse the thermostat in boiling water and inspection.
|
| •
|
After removing the thermostat, check it works properly.
|
※ Check the thermostat opens at the valve opening temperature.
|
| •
|
Replace the thermostat, if it doesn't work properly.
|
|
See also:
Components
1. Brake booster
2. Master cylinder assembly
3. O-ring
...
Valve Body Installation
1.
Installation is the reverse of removal.
After replacement or reinstallation procedure of ...
Steering Angle Sensor (MDPS Only) Description
The Steering Angle Sensor (SAS) is installed in MDPS (Motor Driven Power
Steering) and it sends messages to HECU through CAN communication line.
The SAS is used to determine turning directio ...
Kia Rio: Thermostat: Troubleshooting
Thermostat: Installation
Water pump: Removal and Installation