Dear All,
My 10 years old Lancer CY4A is giving me flucttouating temperature issue, the temperature gauge shows towards the high side and will return to normal at random timing. The engine still takes normal time to reach operating temperature, and fluctuations can start without any given symptoms. Here's what i have gathered so far:
1.) Head gasket - unlikely because my coolant in radiator is always full even early in the morning, no white exhausts smoke nor weird engine performance issue
2.) Water pump - mild chances that its faulty, because it was replaced 2 years ago with other pulleys as well. It does not leak any coolant and it's extremely rare that a water pump is damaged without leaking coolant
3.) Thermostat - Very high chances, the thermostat has never been replaced for the past 10 years, 230k KMs mileage. From my experience, thermostat can be either stuck open or stuck closed, intermittent issue is also possible but not very frequent.
Any other possible issues that i may missed out?
P/S: Last week has been very awesome, 2 of my main cars having same temperature issue, the other one has blown fan motor which is under repair. In this very hot weather, all of our cars' cooling systems are working overdrive, so please get your cooling systems checked and top up coolant, you don't want to end up like me. 2 cars in a row.
Thanks,
Ken
My 10 years old Lancer CY4A is giving me flucttouating temperature issue, the temperature gauge shows towards the high side and will return to normal at random timing. The engine still takes normal time to reach operating temperature, and fluctuations can start without any given symptoms. Here's what i have gathered so far:
1.) Head gasket - unlikely because my coolant in radiator is always full even early in the morning, no white exhausts smoke nor weird engine performance issue
2.) Water pump - mild chances that its faulty, because it was replaced 2 years ago with other pulleys as well. It does not leak any coolant and it's extremely rare that a water pump is damaged without leaking coolant
3.) Thermostat - Very high chances, the thermostat has never been replaced for the past 10 years, 230k KMs mileage. From my experience, thermostat can be either stuck open or stuck closed, intermittent issue is also possible but not very frequent.
Any other possible issues that i may missed out?
P/S: Last week has been very awesome, 2 of my main cars having same temperature issue, the other one has blown fan motor which is under repair. In this very hot weather, all of our cars' cooling systems are working overdrive, so please get your cooling systems checked and top up coolant, you don't want to end up like me. 2 cars in a row.
Thanks,
Ken