The coolant flowing through the throttle body prevents icing.

The coolant flowing through the throttle body prevents icing.

• A. True
• B. False
• C. Not sure
• D. N/A

Answer: (A)

Throttle body icing happens when humid air meets a surface that is colder than freezing, causing ice to form on the throttle plate and in the bore. That ice can restrict airflow and make idle and throttle response jumpy or unstable. Heating the throttle body with engine coolant keeps the bore temperature above freezing, so moisture can’t freeze there. Since the coolant loop warms the throttle body as part of the engine’s cooling system, this heating is a deliberate design to prevent icing, especially in cold or humid conditions and under light throttle or idle. So stating that coolant flowing through the throttle body prevents icing is correct.

Throttle body icing happens when humid air meets a surface that is colder than freezing, causing ice to form on the throttle plate and in the bore. That ice can restrict airflow and make idle and throttle response jumpy or unstable. Heating the throttle body with engine coolant keeps the bore temperature above freezing, so moisture can’t freeze there. Since the coolant loop warms the throttle body as part of the engine’s cooling system, this heating is a deliberate design to prevent icing, especially in cold or humid conditions and under light throttle or idle. So stating that coolant flowing through the throttle body prevents icing is correct.