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:
Installation
1.
Installation is the reverse of removal.
2.
Tighten the HECU mounting bolts and nuts to the specified torque.
3.
...
Installation
1.
Install the oil pan.
(1)
Using a razor blade and gasket scraper, remove
all the old packing material from the gasket surfaces.
...
Engine number
The engine number is stamped on the engine block as shown in the drawing. ...
Hyundai Accent: Thermostat. Troubleshooting
Installation
