Exam 21: Cooling System Operation and Diagnosis

A customer complains that the heater works sometimes, but sometimes only cold air comes out while Driving. Technician A says that the water pump is defective. Technician B says that the cooling system could be low on coolant. Who is right?

(Multiple Choice)

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Question 21

The upper radiator hose collapses when the engine cools. What is the most likely cause?

(Multiple Choice)

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Question 22

Technician A says that the cooling system should be tested for leaks using a pressure-operated pressure pump. Technician B says that the freezing and boiling point of the coolant can be tested using a thermometer. Who is right?

(Multiple Choice)

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Question 23

Which statement is TRUE about thermostats?

(Multiple Choice)

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Question 24

Showing 21 - 24 of 24

Exam 21: Cooling System Operation and Diagnosis

A customer complains that the heater works sometimes, but sometimes only cold air comes out while Driving. Technician A says that the water pump is defective. Technician B says that the cooling system could be low on coolant. Who is right?

The upper radiator hose collapses when the engine cools. What is the most likely cause?

Technician A says that the cooling system should be tested for leaks using a pressure-operated pressure pump. Technician B says that the freezing and boiling point of the coolant can be tested using a thermometer. Who is right?

Which statement is TRUE about thermostats?

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