Glossary “Thermactor pump” Definition:
Device that injects ambient air into the exhaust system.
Thermactor
Glossary “Thermactor” Definition:
An air pump or air-aspirator, air-injection system by Ford.
thread lubrication
Glossary “thread lubrication” Definition:
Refers to the practice of adding a light film of engine oil to the bolt under-head and threads before assembly. Oil reduces the friction that occurs at the threads during tightening.
TGS
Glossary “TGS” Definition:
Top Gear Switch
TFTV
Glossary “TFTV” Definition:
Transmission Fluid Temperature Sensor Input Voltage
TFT
Glossary “TFT” Definition:
Transmission Fluid Temperature
TFI
Glossary “TFI” Definition:
Thick Film Ignition
tetrafluoroethane
Glossary “tetrafluoroethane” Definition:
Chemical name for the “ozone-friendly” refrigerant commonly known as HFC-134a or, more simply, R-134a.
tetraethyl lead (TEL)
Glossary “tetraethyl lead (TEL)” Definition:
A chemical, Pb, once added to gasoline to increase its octane and aid in lubrication of the valves. Lead damages catalytic converters and oxygen sensors and therefore cannot be used in vehicles designed to operate on unleaded fuel. Leaded gasoline is no longer sold in the United States.
tetrachloroethylene
Glossary “tetrachloroethylene” Definition:
Chlorinated cleaning solvent with four chlorine atoms per molecule.
test wheel
Glossary “test wheel” Definition:
Controlled procedure, used by the NHTSA to perform laboratory tests for temperature-resistance testing of automotive tires as determined by how long the tire lasts on the test wheel. The ratings are A, B, or C, with an A rating having the best temperature resistance.
test weight (TW)
Glossary “test weight (TW)” Definition:
Vehicle weight that is used by emission test sites to load the dynamometer during emission testing.
test light
Glossary “test light” Definition:
A small, non-powered or self-powered light used to determine electrical continuity in a circuit.
test lamp
Glossary “test lamp” Definition:
Term used for test light.
test
Glossary “test” Definition:
Procedure whereby the performance or component or system is measured under certain conditions.
TES
Glossary “TES” Definition:
Thermal Electric Switch
ternary
Glossary “ternary” Definition:
Having three parts, elements, or divisions.
terminal speed
Glossary “terminal speed” Definition:
The maximum speed, in drag racing, that a vehicle achieves when passing through the traps at the end of the strip.
terminal
Glossary “terminal” Definition:
1). A battery post or connector. 2). An electrical connector. 3). The point where two or more conductors are connected.
tera
Glossary “tera” Definition:
The prefix representing the number 1,000,000,000,000