OBDII Technical Library

OBDII Technical Library

We're pleased to bring you this growing collection of articles to explain all things OBDII for the DIYer, performance enthusiast and professional technician.

Diagnosing an Engine Misfire

Diagnosing Light-Duty Diesels

Diagnosing Misfires

Diagnostic Flow Charts…Do They Always Work?

Distributorless Ignition Systems (DIS)

Introduction to Emissions Systems

Introduction to Engine Management Systems

OBDII and Emissions Testing

OBDII: Past, Present and Future

Onboard Diagnostics Demystified

PDA-Based Diagnostics: Taking Shops by Storm?

Preventive Maintenance: Fluids and Filters

Replacing Oxygen Sensors for Preventive Maintenance

Spark Plugs for the Home Mechanic

What the Home Mechanic Needs to Know About O2 Sensors

What's A Tune-Up Today?

When To Replace Your PCM (And When Not To)