DIY Auto Repair and Diagnosis

The important function of a working PCV valve, how it works, signs that it's failing, and how to test.

This guide helps you diagnose turn signal problems, when one or more of the signal lights refuses to work.

There have been complaints of the EPS light going on suddenly or the power steering failing in Civics and Accords. What you can do if this happens to you.

When your headlights stop working, follow this simple symptoms-based guide to make a faster repair.

Locate a car electrical short using a test light, digital multimeter and this simple to follow guide.

Have you been having trouble starting your car, truck, van, or SUV? Here are some signs that you have a dying battery.

Find out why your car battery discharges, applying these simple tests at home.

How to troubleshoot a mass airflow sensor in a few simple steps, what to look for, and how to interpret your results.

How to replace the radiator on your Toyota Camry. No special tools required. Plenty of photos and step-by-step instructions.

When you want to diagnose engine noise, let your ear and these simple methods guide you.

Diagnose alternator and charging system problems with this practical guide to get your car back on the road faster.

Find the source of valve train noises and other symptoms using this simple guide.

The color of the exhaust smoke can give you valuable information about the state of health of the engine.

Replace the brake master cylinder in your own garage with this simple guide and suggestions.

Testing the voltage drop can help you find trouble spots in your starter circuit before you swap components unnecessarily.

How to drain and replace the ATF on your Camry, or flush the ATF if necessary. Includes videos of flushing the ATF with and without the help of a 12-volt oil pump.