When your car's oil has just been changed, it should be at its best, right? So why is it that sometimes after an oil change, the check enging light comes on?

Have you been putting off dealing with your car’s check engine light? Many believe this signal is little more than a small inconvenience, but ignoring it could lead to serious problems down the road.

“Ignoring the Check Engine light can cause a car to fail an emissions test and can result in the need for additional repairs,” cautions David Rich, CarMD’s technical vice-president.

Why It’s Harmful: Ignoring the light could lead to costly repairs, reduced fuel efficiency, or even engine failure. 2. Skipping Regular Oil Changes Oil is your car's lifeblood. Skipping oil changes ...

The best way to curtail trillions spent on U.S. healthcare is to significantly reduce a high burden of preventable diseases ...

Catalytic converters can be both causes and victims of check engine lights. A failing “cat” can trigger a check engine light and/or produce an unpleasant exhaust odor, but converter failure is ...

Charcoal canister problems can often cause the check engine light to go on, and they are often difficult for mechanics to diagnose.