Step 3 » GENERAL learning environment Category B (B, B1)

For answer  A 

The most frequent malfunctions of the engine cooling system are the loosening or breaking of the drive belt of the fan and the water pump. The engine cooling system has the role of ensuring an optimal engine temperature (90-95 degrees Celsius). The temperature inside the engine can reach 2000° C at the moment of combustion, therefore cooling is necessary to avoid excessive expansion of the parts, which would generate the locking (seizing) of the engine.

For answer  B 

The air intakes, meaning those holes that allow the fan to draw air, are large enough that they cannot be easily blocked. But in the event that these became completely clogged/blocked, it would not have a serious negative effect but does not determine a frequent cause of the malfunctioning of the engine cooling system.

For answer  C 

The clutch is not a component of the cooling system, it is a component of the distribution mechanism, and its slipping does not influence or affect in any way the engine cooling system.

The correct answer is: A

Recommendations:

Lesson about the engine cooling system --> The cooling system