Posted on 9/27/2024
Ever sat at a red light, glanced at your dashboard, and noticed your car's RPM needle fluctuating erratically? It can be unnerving when your car’s RPM goes up and down while idling, especially when it feels like the engine is struggling. But don't worry—this is a common issue with modern vehicles, and several factors can be the cause. From airflow problems to fuel delivery issues, here’s a closer look at why this happens and what you can do about it. What Is RPM RPM, or "revolutions per minute," measures how fast your engine's crankshaft is turning. When your car is idling, the RPM should remain steady, typically between 600 and 1000 RPM for most vehicles. If it starts to bounce around, there’s something off. So, why does the RPM fluctuate? When your car is idling, it should be getting the perfect balance of air and fuel. But if that balance gets disrupted, even slightly, it can cause the engine to surge or stall, leadin ... read more