Symptoms
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Possible Causes
|
Remedy
|
Coolant leakage
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| • |
From the bleed hole of the water pump
|
|
Visually check
|
| • |
Check leaks after about ten-minute warming up.
|
|
| • |
If coolant still leaks, replace a water pump.
|
|
| • |
If leakage stops, reuse the water pump (Do not replace the pump
with a new one).
|
|
|
|
| • |
Check the tightening of the water pump mounting bolts.
|
|
| • |
Retighten the mounting bolts.
|
|
| • |
Check damage of gaskets or inflow of dust.
|
|
| • |
Replace the gasket and clean dust off.
|
|
| • |
From outer surface of water pump
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|
| • |
Check the material or any cracks of the water pump.
|
|
| • |
Poor material. If any crack found, replace the water pump.
|
|
Noise
|
|
Inspection with a stethoscope
|
| • |
After starting the engine, check noise with a stethoscope.
|
|
| • |
If there is no noise, reuse the water pump(do not replace it).
|
|
| • |
If there is any noise from the water pump, remove the drive
belt and recheck.
|
|
Inspection after removing a drive belt
|
| • |
After removing a water pump and a drive belt, check noise again.
|
|
| • |
If there is noise, reuse the water pump. Check other drive line
parts.
|
|
| • |
If there is no noise, replace the water pump with a new one.
|
|
Inspection after removing a water pump
|
| • |
After removing a water pump and a drive belt, check noise again.
|
|
| • |
If there is any interference between them, replace the water
pump with a new one.
|
|
Overheating
|
|
Loosened impeller
|
| • |
Corrosion of the impeller wing
|
|
| • |
Poor coolant quality / Maintenance check
|
|
| • |
Impeller seperation from the shaft
|
|
| • |
Replace the water pump.
|
|
Other information:
Inspection
Radiator Cap Testing
1.
Remove the radiator cap, wet its seal with engine coolant, and then
install it on a pressure tester.
2.
Apply a pressure of 93.16 ~ 122.58 kPa (0.95 ~ 1.25 kgf/cm², 13.51
~ 17.78 ...
The system may not operate when:
The ISG related sensors or system error occurs.
The following will happen:
The yellow AUTO STOP () indicator
on the instrument cluster will stay on after blinking for 5 seconds.
The light on the ISG OFF button will illuminate.
✽ NOTICE
If the ISG OFF butto ...
Water pump Components and components location
Thermostat Components and components location