Tagcheck engine light

Searching for check engine light info? Check out all the check engine light related articles here on the NAPA Know How blog. We’ve got Know How for all!

How to Improve Fuel Economy - This Won't Hurt a Bit

Posted May 24, 2021 Maintenance

How to Improve Gas Mileage Without Spending a Fortune

Even with the price of gas at a low, that’s no reason you shouldn’t know how to improve gas mileage. With the price of fuel constantly fluctuating, you…

A section of a car's dashboard with an illuminated check engine light

Posted April 20, 2021 Know How

Check Engine Light Just Came On? Follow These 3 Tips

The check engine light just came on. Now what? Here’s what to do the next time this light makes an appearance.

A check engine light illuminates on a vehicle dashboard.

Posted February 23, 2021 Maintenance

What Does a Check Engine Light Flashing Mean?

Is a flashing check engine light worse than a solid one? Should you keep driving if it comes on? Here we will answer these questions.

An arrow points to the mass air flow sensor in the engine bay

Posted October 7, 20201 Comment Know How

7 Symptoms of a Bad Mass Air Flow Sensor

If you’re experiencing any of these seven symptoms of a bad mass air flow sensor, it’s worth taking a look in your engine bay to diagnose the problem.

The check engine light can be intimidating for a DIYer, but it doesn't have to be.

Posted September 13, 2020 Know How

Your Check Engine Light Turned On, What’s Next?

The check engine light can be an intimidating surprise. A number of questions immediately come to mind: What’s wrong with your car? Will it be expensive to fix? Can you … Continue Reading Your Check Engine Light Turned On, What’s Next?

Posted August 7, 2020 Know How

What does an Air Charge / Manifold Temperature Sensor do?

The Air Charge / Manifold Temperature sensor is used by the computer to measure air density for fuel mixture control. The computer uses this information to trim the air/fuel ratio … Continue Reading What does an Air Charge / Manifold Temperature Sensor do?

Posted June 16, 2020 Know How

What does a Barometric Pressure Sensor do for your engine?

The BARO sensor reads the barometric pressure. The PCM uses this information to make adjustments to fuel trim and engine timing. The engine requirements are quite different when driving in … Continue Reading What does a Barometric Pressure Sensor do for your engine?