‘It is idling rough’: AutoZone mechanic shares how to change your ignition coil when the check engine light comes on

How well is your car starting? Does it rev up and purr when you turn the key or punch the start button? Or does it cough and splutter?

If so, you might have a faulty ignition coil. According to the Porsche Chantilly dealership site, strange noises, bad gas mileage, and, of course, a check engine light, may indicate that your vehicle is due to have its coils replaced.

The ignition coils of your vehicle are responsible for transforming the low energy of your car battery into...