What might you notice if a vehicle has a drivability issue related to stalling?

When diagnosing a drivability issue related to stalling, intermittent loss of engine power is a key observation. This phenomenon often indicates that the engine is experiencing disruptions in power delivery, which can result from various factors such as fuel supply problems, ignition system malfunctions, or air intake issues. If the vehicle is stalling, it often means that at times, the engine is unable to maintain the necessary power output to keep running smoothly, leading to those momentary losses in performance that drivers experience.

It stands to reason that consistent fuel mileage would not be expected in a stalling situation, as fluctuations in engine performance can cause variations in fuel consumption. Additionally, no change in acceleration would contradict the nature of a stalling issue since the engine would typically struggle to respond when power loss occurs. Lastly, improved engine performance would be highly unlikely if the vehicle is facing stalling issues, as such problems usually signify that the engine is not operating at its optimal level.