Which combination of actions helps prevent engine overheating due to coolant flow issues?
Flush cooling system and replace thermostat
The problem is specifically overheating caused by coolant flow issues, so the correct actions must directly restore proper circulation of coolant.
Flushing the cooling system clears out scale, rust and sludge that block the radiator and passages, restoring free coolant flow.
Replacing the thermostat ensures the valve opens correctly at the set temperature; a stuck-closed thermostat stops coolant reaching the radiator and causes overheating.
Together these two actions directly address coolant circulation, whereas adjusting injectors, changing fuel or working on the exhaust/timing do not affect coolant flow.
Hence, the answer is Flush cooling system and replace thermostat.
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Important Questions from Cooling System
Which component acts as the drive device in the automobile air conditioning system?
A radiator core should be cleaned _________.
Which of the following is an engine coolant property
- In the latest vehicle's cooling system, hose pipes are made up of:
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