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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

Honda VTEC FAQ – How VTEC works

One of the most commonly used terms by Honda enthusiasts around the world, VTEC is Honda's variable valvetrain technology. VTEC technology in the mid...
Honda performance sedan and Nissan Z connected to a shared central computer, zone ECUs and vehicle-software architecture planned for 2029.

Honda and Nissan Will Share ECUs and Vehicle Software Starting in 2029

Honda and Nissan will jointly develop central computers, zone ECUs, operating systems and vehicle-control software for next-generation cars.

How To Test a Mazda B2300 TPS Sensor

When your Mazda B2300 TPS sensor begins to fail, it can cause a bunch of issues with your light duty truck. The TPS is...
Close-up of LS1 aluminum engine block showing cylinder head alignment dowel sleeves installed in the front and rear block deck counterbores.

LS1 Cylinder Head Alignment Dowels: Location, Installation, and Why They Matter

LS1 cylinder head alignment dowels locate the heads accurately on the block before the fasteners are tightened. Learn where all four dowels install, how to seat them and why damaged or missing sleeves should never be ignored.
Multimeter testing a shared five-volt sensor reference circuit connected to several engine sensors

How to Diagnose a Shared 5-Volt Reference Circuit

One failed sensor can pull down a shared 5-volt reference circuit and make several unrelated systems report trouble at the same time....

How To Test a Chevy Cavalier MAP Sensor

The Chevy Cavalier MAP Sensor is a barometric pressure sensor that's designed to deliver information about the air coming into your engine. This MAP sensor...
Technician inspecting a gray Jeep Wrangler’s power-steering pump wiring beside a red Gladiator during recall repairs.

NHTSA Closes the Jeep Fire Probe, but 1.08 Million Vehicles Still Need Recall Repairs

NHTSA has closed its investigation into underhood fires involving Jeep Wranglers and Gladiators. That does not cancel the recall, remove the fire...

FAQ : How to Wire a LS1 in a S14 240SX

The transplanting of the robust LS1 GEN III Shortblock is something that has happened for nearly a decade, but has recently ramped up in...