Ignition & Idle Control - Noises & Vibration Symptoms

Common symptoms and diagnostic guides.

Car vibrates then smooth near stops

Car vibrations that occur as you slow down toward a stop and then smooth out at idle are usually linked to engine balance, ignition, fuel or mount issues that cause rough idling.

medium risk

Car shakes when I idly sit

Car shaking when idling is usually due to engine performance, fuel delivery, or mount issues. Common causes include misfires, vacuum leaks, and worn engine mounts disrupting smooth idle operation.

medium risk