What to Do When Your Car Shakes at Idle but Drives Smoothly?

If your car shakes at idle but smooths out while driving, it’s important to identify the cause to prevent further issues. This common problem is often linked to several factors, such as worn-out spark plugs, a faulty idle air control valve, or vacuum leaks. When spark plugs become dirty or worn, they can cause misfires, leading to shaking at idle. Similarly, a malfunctioning idle air control valve can disrupt the air-fuel mixture, causing instability. Vacuum leaks can lead to an imbalanced air-fuel ratio, further contributing to rough idling. To fix this, inspect the spark plugs, check the idle air control valve, and look for any vacuum leaks. If the issue persists, it’s best to visit a mechanic to diagnose and fix the problem.
read more..