Engine Cooling System

1. Tech A states thermostats in automotive engine are used to adjust the temperature of the engine. Tech B states radiators absorb heat from the air to keep the engine warm. Which Tech is correct?

• TECH A

• TECH B

• BOTH TECHS

• NEITHER TECH

The function of a radiator is:

• uses an impeller to force coolant through the engine coolant passages.

• stays closed until operating temperature is reached

• stores coolant

• primary heat exchanger for the vehicle engine

The function of a water pump is:

• uses an impeller to force coolant through the engine coolant passages.

• stays closed until operating temperature is reached

• stores coolant

• primary heat exchanger for the vehicle engine

The function of a coolant reservoir is:

• uses an impeller to force coolant through the engine coolant passages.

• stays closed until operating temperature is reached

• stores coolant

• primary heat exchanger for the vehicle engine

The function of a thermostat is:

• uses an impeller to force coolant through the engine coolant passages.

• stays closed until operating temperature is reached, then allows coolant flow

• stores coolant

• primary heat exchanger for the vehicle engine

If the thermostat does not open, the engine will typically:

• turn off

• overheat

• lose oil

• leak coolant

if a radiator core (fin area) get clogged with dirt and debris, what is the immediate effect?

• poor coolant-to-air heat exchange

• the coolant will not flow effectively

• the cylinder head will warp

• the radiator will breach

Tech A states the thermostat temperature can be adjusted to suit operational demands. Tech B states the thermostat is necessary for a vehicle to maintain operating temperature as designed.

• TECH A

• TECH B

• BOTH TECHS

• NEITHER TECH

Name this part

• Thermostat

• Radiator

• Heater Core

• Radiator Cap

Name this part

• Water Pump

• Radiator

• Thermostat

• Heater Core