What is engine?

engine thermostat

Glossary “engine thermostat” Definition:
Temperature sensitive mechanical device found at the coolant outlet of an engine that expands (opens) or contracts (closes) to control the amount of coolant allowed to leave the engine, based on its temperature.

Engine EAR

Glossary “Engine EAR” Definition:
Trade name of an electronic noise detection device. Consists of an earphone head-set, adjustable amplifier and a noise sensor. It is primarily used to isolate engine noises, vacuum leaks (noise), body squeaks, and rattles.