What is the idle speed in second gear?
2 Answers
The idle speed in second gear is 5--10 km/h. Below is relevant information about idle speed: 1. Introduction: A car's idle refers to an operating condition where the engine runs without load, known as idling. This occurs when the car is in neutral gear, and the engine speed during idling is called idle speed. The idle speed can be adjusted by modifying parameters such as the throttle opening. 2. Classification: (1) Normal idle: When the vehicle is parked and the engine is started, the minimum stable engine speed is referred to as parking idle. (2) Driving idle: When the car is in gear without pressing the accelerator pedal or when the accelerator pedal is released while driving, maintaining the minimum throttle opening, the engine speed matches the parking idle speed. This state is called driving idle.
The idle speed in second gear does not actually refer to the vehicle speed, but rather the concept of engine speed at idle. Generally, the idle speed ranges between 700-900 RPM, but the specific value depends on the vehicle model and conditions. For example, older cars might idle at around 600 RPM, while newer ones at 800 RPM. When the car is in second gear and the clutch is not engaged, the engine at idle will drive the wheels to move slowly, resulting in a vehicle speed of approximately 5-15 km/h. However, this range varies depending on the car, primarily influenced by gear ratio, tire size, and engine performance. While working on cars, I often see beginners assuming this is a fixed value, leading to stalling or rolling, so understanding the principle is crucial. Stable idle speed also affects fuel consumption and emissions—if the RPM fluctuates, it might indicate carbon buildup or sensor issues. When driving, I tested my old car on flat ground, and the idle speed in second gear was only around 10 km/h, but it varied more on inclines. In short, this is not a standard figure—checking the vehicle manual or seeking professional diagnostics is more accurate.
