TP data indicates the amount of vacuum in the engine.

TP data indicates the amount of vacuum in the engine.

• A. True
• B. False
• C. It indicates fuel pressure
• D. It indicates ignition timing

Answer: (B)

Throttle Position data shows how far the throttle is opened, which affects airflow and engine load, but it does not measure the vacuum inside the intake. Vacuum is the manifold pressure, typically read by a MAP (manifold absolute pressure) sensor or a dedicated vacuum sensor. While throttle opening influences vacuum, TP data alone doesn’t quantify it. So the statement is false because TP data does not indicate vacuum directly. For vacuum, you’d look at MAP/vacuum sensor data (fuel pressure and ignition timing are measured by their own sensors).

Throttle Position data shows how far the throttle is opened, which affects airflow and engine load, but it does not measure the vacuum inside the intake. Vacuum is the manifold pressure, typically read by a MAP (manifold absolute pressure) sensor or a dedicated vacuum sensor. While throttle opening influences vacuum, TP data alone doesn’t quantify it. So the statement is false because TP data does not indicate vacuum directly. For vacuum, you’d look at MAP/vacuum sensor data (fuel pressure and ignition timing are measured by their own sensors).