Have you ever felt your engine or steering wheel shaking when you're at a red light? You're not alone. Thousands of people experience what is called rough engine idling. But just what exactly is rough engine idling? Should you be concerned about it? Causes of Rough Engine Idling Several factors can contribute to rough idling, so the precise cause can be challenging to determine. Idling your engine is a good indicator of its health; if you encounter problems, address it as soon as possible and check for any potential causes. Nevertheless, it's not normal, and it's not good. The causes of a rough idling engine could be a bad spark plug wire, a bad fuel injector, a mechanical problem, an engine mount, or a transmission problem. Most of those causes could be damaging to other emission components and cause lousy gas mileage. This could potentially get you stranded somewhere, depending on what is the cause. Your vehicle's steering wheel or engine shaking while idle is a good indication that something is wrong and needs to be fixed as soon as possible. If your "check engine" light comes on and begins to flash, stop driving the vehicle immediately and get it towed to a shop, as driving with a flashing "check engine" light could be damaging to the emission components. Contact Weber Automotive Today Don't let a shaky steering wheel or engine stop you from getting to where you need to