Posted on 9/27/2024
Do you notice your car’s RPMs fluctuating instead of staying steady? It’s a common issue, but what’s causing your car's RPM to be unstable at idle? The culprit could be anything from airflow problems to fuel delivery issues or electrical faults. Let’s look into some of the most common reasons why this happens and what you can do to fix it. What Causes Unstable RPM at Idle? There are several reasons why your car's RPMs might bounce around when it should be idling steadily. Let’s explore the most common causes that could be affecting your vehicle. Vacuum Leaks Another common cause of fluctuating RPMs at idle is a vacuum leak. Your engine relies on a delicate balance of air and fuel to run efficiently, and if there’s a leak in one of the vacuum hoses, it disrupts this balance. The engine may receive too much air, causi ... read more