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Automotive Acronyms S

Acronym Definition Notes / What Is / Who Is
SAE Society of Automotive Engineers Premiere world resource for the design, manufacturing, standardization, operation, and maintenance of automobiles.
SAVM spark advance vacuum modulator Vacuum actuated spark advance unit provides additional spark advance timing during periods of lower intake manifold vacuum caused by exhaust gas recycle (EGR)
SC supercharger A blower that sits below the carburetor / TB and is mechanically run from the crankshaft. Increases air / fuel mixture delivery for more horsepower.
SCB supercharger bypass Open when throttle loads are low and closed when throttle loads are high. With the bypass valve open there is no pressure being created across the supercharger. This allows the supercharger not to take away engine energy. With the bypass valve closed, all airflow is routed through the supercharger and boost is created in the intake manifold.
SCCA Sports Car Club of America Amateur and professional motorsports organization with over 55000 members, sanctioning over 2000 events each year in road racing, autocross and rallying.
SEMA Specialty Equipment Market Association Founded in 1964, trade association consisting of manufacturers, distributors, retailers, publishing companies, WDs, jobbers, auto restorers, street-rod builders, restylers, car clubs, race teams and more.
SES service engine soon Warning light on dashboard to notify the driver to run a diagnostic test
SFI sequential fuel injection System that uses a camshaft position sensor, which then lets ECM determine which fuel injector to fire.
SIR Supplemental Inflatable Restraint air bag
SOHC single overhead cam One camshaft located above piston / valve train.
SRDV spark retard delay valve Cold engine operation delays distributor vacuum spark retard as the vehicle is accelerated to save fuel and reduce emissions.
SRI service reminder indicator Dash idiot light
SRS Supplemental Restraint System air bag
SRT system readiness test Used to indicate whether the ECM has completed a self diagnostic test.
STFT short term fuel trim As opposed to LTFT. Fuel trims are expressed in percentages; positive values indicate lean (add fuel) and negative values indicate rich (subtract fuel).

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Note: An Acronym is a abbreviation that is formed using the individual letter components in a phrase, name, organization or thing. Listings on this page are used throughout the automotive industry.

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