Why does an engine stall when the airconditioning is on?

An engine may stall when the air conditioning is on due to increased load on the engine. The AC system draws power from the engine to operate the compressor, which can reduce engine performance, especially if the engine is already struggling or if there are issues with fuel supply, ignition, or idle speed. If the engine's idle speed is too low or if it cannot compensate for the extra load, it may stall. Regular maintenance of the engine and AC system can help prevent this issue.