Ch. 13 COOLING SYSTEM
13-2
Trouble Diagnosis
The engine temperature is too high
The water thermometer and the temperature sensor do not work properly.
The thermostat is stuck to close.
Insufficient coolant.
The water hose and jacket are clogged.
Fan motor malfunction.
The radiator filler cap of the radiator malfunction.
The engine temperature is too low
The water thermometer and the temperature sensor malfunction.
The thermostat is stuck to open.
Coolant is leaking
The water pump mechanical seal does not function properly.
The O-ring is deteriorated.
The water hose is broken or aged.
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