Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Emission Control Abbreviations: "T"
- TAA
-
Turbo Air-To-Air
- TAA
-
Throttle Actuator Assembly
- TAB
-
Thermactor Air By-Pass
- TAD
-
Thermactor Air Diverter
- TAC
-
Thermostatic Air Cleaner
- TBI
-
Throttle Body Injection
- TBPCS
-
Throttle By-Pass Control System
- TC
-
Turbo Charger
- TCC
-
Torque Converter Clutch
- TCCL
-
Torque Converter Control
- TCD
-
Throttle Closing Dashpot
- TC-DV
-
TC Delay Valve
- TC-TVC
-
TC Thermal Vacuum Switch
- TC-VS
-
TC Vacuum Switch
- TD
-
Thermactor Diverter
- TFT
-
Tank Fuel Temperature Sensor
- THOS2
-
Third Heated Oxygen Sensor
- TICV
-
Thermal Ignition Control Valve
- TIV
-
Thermal Idle Valve
- TK
-
Throttle Kicker
- TLUC
-
Transmission Lock-Up Converter
- TLUC-TVS
-
TLUC Thermal Vacuum Switch
- TLUC-VS
-
TLUC Vacuum Switch
- TM
-
Throttle Modulator
- TOS
-
Throttle Opener System
- TP
-
Throttle Positioner
- TPI
-
Tuned Port Fuel Injection
- TPV
-
Throttle Poppet Valve
- TR
-
Thermal Reactor
- TRC
-
Throttle Return Control
- TRCS
-
Throttle Return Control Solenoid
- TRCTL
-
Throttle Return Control Throttle Lever Actuator
- TRSCV
-
Throttle Return Solenoid Control Valve
- TRTVV
-
Temperature Regulator Thermal Vacuum Valve
- TRVV
-
Transmission Vacuum Valve
- TSOL
-
Throttle Solenoid
- TVISD
-
Throttle Vacuum Idle Speed Diaphragm
- TVM
-
Transmission Vacuum Modulator
- TVS
-
Thermal Vacuum Switch
- TWC
-
Three-Way Catalytic Converter
- TWC+OC
-
Three-Way + Oxidation Catalytic Converter
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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