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 Sensor

Also called the 'Throttle Position Sensor' (or 'TPS' for short). This device indirectly determines how far the gas pedal has been depressed. If you think yours might be bad, try testing it with an ohmeter, or replacing it with a known good TPS before you spend the dough.

See Also:
Open Circuit
Oxygen Sensor
Battery Terminals
Spark Knock
PCV Valve
Ignition Fire

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