An inoperative cooling fan may cause high head (high-side)pressure at what vehicle speeds?
A) idle (vehicle not in motion)
B) slow
C) highway
D) both A and B

Question

Quizplus · Accepted Answer

An inoperative cooling fan will most significantly impact the vehicle's cooling system at low speeds or when the vehicle is not in motion (idle), because at higher speeds, the natural airflow through the radiator compensates for the fan's operation.

An Inoperative Cooling Fan May Cause High Head (High-Side)pressure at What