Automotive Acronyms T

Acronym	Definition	Notes / What Is / Who Is
TACH	tachometer	Displays the RPM of the engine.
TAV	temperature actuated vacuum	Used in the emission control system.
TB	throttle body	Replaces a carburetor on a intake manifold.
TBI	throttle body injection	Electronic fuel injectors located inside the TB.
TC	turbocharger	Operated by engine exhaust pressure, pumps high volumes of air / fuel mixture into intake manifold.
TCC	torque converter clutch	Similar to the clutch in a manual transmission, operated a electric solenoid. Locks in low speed operation.
TCM	transmission or transaxle control module	Controls electric / fluid flow. Works with ECM.
TCS	traction control system	Controls traction of vehicle. Works with ECM and ABS.
TDC	top dead center	Position of a engine piston
TFP	Transmission fluid pressure	Electric pressure switch
TIA	Tire Industry Association	International association representing the tire industry, including manufacturers, repair, recycle, sell, service, new or retreaded tires. Formed by the 2002 merger of the International Tire & Rubber Association ITRA and the Tire Association of North America TANA.
TP	throttle position	Position where the throttle plate is located.
TPP	throttle position potentiometer	A electric resistor in the TPS
TPS	throttle position sensor	Electrically determines how far you push the accelerator pedal down / throttle plate position.
TRAA	Towing & Recovery Association of America	Founded in 1979 in Kansas City, Missouri and headquartered in Alexandria, Virginia, is the umbrella trade group and national voice of the towing and recovery industry.
TTMA	Truck Trailer Manufacturers Association	International association of truck trailer manufacturers and industry suppliers.
TVS	thermal vacuum switch	Controlled by engine coolant heat, makes or breaks electrical contact.
TVV	thermal vacuum valve	Controlled by engine coolant heat, opens or closes a vacuum operated device.
TWC	three way catalyst	A catalytic converter

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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