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.


Engine Computer

Different manufacturers refer to these on-board "computers" by unique initialisms--ECM, ECU, etc.--but fundamentally most are the same: they use inputs from various engine sensors to control the engine's operation.

See Also:
Electronic Ignition
Spark Plug
Ignition Timing

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