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.


Throttle Body

The part of the fuel system that houses the throttle, it is often tied directly to the throttle control/pas pedal, so that as you press down the gas pedal, a little valve in the throttle body opens up and allows the vacuum of the engine to ingest air and start to party.

See Also:
Rich Fuel Mixture
Fuel Injection
Fuel Pump
Carburetor Bowl

Diagnose Your Car's Problem

Engine won't start? Weird sound? Strange smoke? Got something going on with your car but not sure what it is? The easy to use DriverSide Diagnostic Tool is here to help you figure it out.

Enter Zip: