Tagdiagnostic tools

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

Posted January 3, 2020 Know How

Flow Control: How Does A Fuel Pressure Regulator Work?

What is a fuel pressure regulator? Essentially, it’s a vital component of your vehicle’s engine management system. Learn why it’s so important.

A car's exhaust system. A catalytic converter plays a major role in a car's exhaust system and when it goes bad, it can wreak havoc on your car's performance. Here's how to diagnose a bad catalytic converter.

Posted March 8, 2019 Know How

Worn Out Catalytic Converter? Here’s How to Know For Sure

A bad catalytic converter will fail to transform dangerous exhaust gasses and feed back pressure into the exhaust system. Here’s how to diagnose it.

Posted February 23, 20191 Comment Know How

Know-How Notes – Electrical Tools Guide

For most car owners, the scope of electrical system knowledge stops at the fusebox. If it isn’t a bad fuse or bad bulb, that is as far as they can … Continue Reading Know-How Notes – Electrical Tools Guide

Posted August 11, 2017 Know How

Avoiding Potholes and Performing a Post-Impact Inspection

Potholes can cause extensive damage to your vehicle. Here are some tips for avoiding potholes and inspecting your vehicle after hitting one.

Posted February 19, 20151 Comment Know How

Is It Time For a New Car Battery?

Most people don’t think about how to check car batteries. The signs that your car or truck needs a new battery can be subtle: your engine takes a few extra … Continue Reading Is It Time For a New Car Battery?