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.
2004 Toyota Tundra Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Throttle Body: Replacement
- DRAIN ENGINE COOLANT
- DISCONNECT ACCELERATOR CABLE FROM THROTTLE BODY
- REMOVE AIR CLEANER HOSE
- REMOVE THROTTLE BODY
- Disconnect the throttle position sensor connector.
- Disconnect the throttle control motor connector.
- Disconnect the accelerator pedal position sensor connector.
- Disconnect the air hose.
- Disconnect the 2 water bypass hoses.
- Remove the 2 bolts, 2 nuts, throttle body and gasket.
- REINSTALL THROTTLE BODY
- Place a new gasket on the air intake chamber facing the protrusion upward.
- Install the throttle body with the 2 bolts and 2 nuts.
Torque: 18 N.m (180 kgf.cm, 13 ft.lbf)
- Connect the throttle position sensor connector.
- Connect the throttle control motor connector.
- Connect the accelerator pedal position sensor connector.
- Connect the air hose.
- Connect the 2 water bypass hoses.
- RECONNECT ACCELERATOR CABLE TO THROTTLE BODY
- REINSTALL AIR CLEANER HOSE
- REFILL WITH ENGINE COOLANT
- START ENGINE AND CHECK FOR COOLANT LEAKS
Factory Service Tools
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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.