What Causes the Engine to Stall When Idling with AC On?

[LaNolan]

Here are the possible reasons: Clutch control issue: Novice drivers may struggle with clutch control, often releasing it too quickly during startup, causing the vehicle to stall unexpectedly. Therefore, when starting a manual transmission car, it's crucial to control the clutch properly and keep the left foot steady. Although stalling is less common in automatic transmission cars, releasing the clutch too quickly can still cause it. Braking issue: Many beginners driving manual cars forget to press the clutch simultaneously when braking, especially during sudden stops, leading to engine stalling. Hence, when braking, either shift to neutral or press both the brake and clutch pedals together. Fuel shortage issue: Some vehicles have inaccurate fuel gauges, showing remaining fuel when in reality, the supply can't keep up once the car is running, resulting in stalling. Therefore, it's essential to refuel promptly to avoid stalling.