Technician A says engine cooling fans are only necessary when the vehicle is moving slowly or stopped. Technician B says modern aerodynamic shapes have increased the need for operating the cooling fan. Who is correct?
A) Technician A
B) Technician B
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician B is correct, as modern aerodynamic shapes create less air flow through the engine compartment when the vehicle is in motion, so the cooling fan needs to operate more frequently to keep the engine at a safe operating temperature. Technician A is incorrect, as cooling fans are necessary at all speeds, as airflow through the radiator is reduced when the vehicle is traveling at highway speeds.

Technician a Says Engine Cooling Fans Are Only Necessary When