Glossary of Auto Terms

DriverSide's Car Dictionary has the most comprehensive definitions of automotive terms. This auto glossary can help you decipher what your mechanic is fixing and what the purpose or function of the particular auto part or accessory is for. We have taken the mystery out of automotive service jargon, so that you don't have to.



It may sound like something only a tech-geek could love, these simple devices read resistance in electrical circuits, which can basically tell you if many parts and sensors are functioning properly or not. Handier than an iPhone, and easier to use than a BlackBerry, a good rule of thumb is if your vehicle is out of warranty, an ohmeter belongs in your garage.

See Also:
Carbon Tracks
Mass Airflow Sensor
Air Flow Sensor
Charging System
Spark Knock
Electronic Ignition
Spark Plug Cable
Oxygen Sensor

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