What diagnostic trouble code (DTC) could be set if the thermostat is defective?

What is the purpose of the lower air dam in the front of vehicles?

What type of pump is a water pump?

Water pumps ________.

Which statement is TRUE about thermostats?

The normal operating temperature (coolant temperature) of an engine equipped with a 195°F thermostat is ________.

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

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?

Technician A says that a dirty or blocked radiator can cause the engine to overheat. Technician B says that overheating can be caused by a defective water pump. Who is right?

What can be done to prevent air from getting trapped in the cooling system when the coolant is replaced?

Heat transfer is improved from the coolant to the air when the ________.

Technician A says that the purpose and function of the cooling system is to maintain proper engine operating temperature. Technician B says that the water pump controls engine coolant temperature by opening at its rated opening temperature to allow coolant to flow through the radiator. Who is right?

Technician A says that cooling fans are designed to draw air through the radiator to aid in the heat transfer process. Technician B says that drawing the heat from the coolant transfers this heat to the outside air through the radiator. Who is right?

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

Technician A says that the automotive water pump is a positive displacement-type pump. Technician B says that the coolant mix should be a 50/50 split between antifreeze and water. Who is right?

An automotive engine that running at too high of a temperature will have which of these?

The water pump uses which of these reactionary forces actions to circulate the coolant?

Pressurizing the automotive cooling system results in ________.

If a cooling system operates at too cool of a temperature, the engine will ________.

Electric cooling fans are typically commanded on and off by the ________.

The use of a coolant recovery machine is helpful in preventing ________ from entering the cooling system.

A 5 ribbed serpentine belt should be tensioned at about ________.

For every one PSI increase in cooling system pressure, the coolant's boiling point is raised how many degrees F?