| 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). |
