10/24/2026
Car Shakes at Idle but Drives Fine? Here’s What It Could Mean
If your car shakes while sitting at a stoplight but smooths out once you start driving, something may be affecting the engine at low RPM.
Common causes include:
• Worn motor mounts
• Engine misfires
• Worn spark plugs
• Vacuum leaks
• Dirty or failing fuel injectors
• Throttle-body problems
• Unstable idle speed
How the shaking changes can provide important clues. If it gets worse in Drive but improves in Park, motor mounts or an engine problem under load may be involved. If you also notice hesitation, unstable RPM, or a check engine light, the issue may be related to ignition, fuel delivery, or airflow.
Detroit Auto Clinic provides professional engine diagnostics and auto repair for drivers throughout Cleveland and Northeast Ohio.
If your car has started shaking at idle, call (216) 965-4717 to schedule an inspection before the problem gets worse.
www.detroitautoclinic.com/blog/why-does-my-car-shake-at-idle-but-stop-when-driving-common-causes-and-warning-signs