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Looking for help with your vehicle? Do you see the dreaded check engine light on? have a problem with your car or truck and need a find a DIY guide? Our collection of How To articles can help you save money and time and get back on the road. No matter what issues in your vehicle you can find the how to tutorial to help you.
Whether you car problems are simple or complex, our guides are here to help. With just a digital multimeter at your side, you can test and diagnose most of your car issues with our How To articles. One of the other tools that is a must have when you want to fix a car yourself is the OBDII scan tool.
These tools quickly connect to your OBDII vehicle to read the Diagnostic Trouble Codes that are stored in your engine computer. Need a How To guide but can't find it in our archive? Leave us a comment or message us and let us know, we'll be glad to help!

Popular FAQ

How To Replace a Ford Fusion Air Filter

Your Ford Fusion air filter is an essential part of your engine. This air filter element eliminates dust and particulates from your intake stream....
2026 Hyundai Ioniq 9 with its rear door open during inspection of the powered second-row seat

Hyundai Ioniq 9 Recall: Powered Rear Seats May Trap an Occupant

Hyundai is recalling 5,360 Ioniq 9 electric SUVs because powered rear seats may fail to stop after contacting a person. Here are the affected trims, owner precautions and software remedy.
2027 Chevrolet Corvette Stingray, Grand Sport and Grand Sport X compared on a performance circuit

Which 2027 Corvette Should You Buy? The Grand Sport Looks Like the Sweet Spot

The 2027 Chevrolet Corvette lineup now stretches from a 200-mph Stingray to the 1,250-horsepower ZR1X, but the smartest enthusiast purchase may sit...
Automotive PWM waveform showing 25, 50 and 75 percent duty cycles controlling a vehicle solenoid

What Is PWM in a Car? Why Your Multimeter May Be Lying to You

Automotive PWM circuits rapidly switch power or ground to control components. Learn how duty cycle works and how to test it correctly.

How To Compression Test your Engine

If your car or truck has been running poorly and doesn't seem quite as peppy as it once did, it may be a good idea...

How To Test a Chevy Cavalier TPS Sensor

When your throttle position sensor starts going bad in your Chevy Cavalier, it can create drive-ability issues. Your Cavalier TPS Sensor is a device that is...
LS1 24x crankshaft reluctor compared with later 58x LS reluctor wheel

LS1 24x vs. 58x Reluctor Wheels: What You Need to Know Before Mixing LS...

Learn the key differences between LS1 24x and 58x reluctor wheels, including crankshaft compatibility, PCM requirements, sensor considerations, and what to verify before assembling or swapping an LS engine.

What is a Honda Lost Motion Assembly?

So you've adjusted your valves in your Honda but the tapping noise just won't go away. You've double checked your valve clearances and redone...