Contents: Examination ↓ Replacement ↓
Examination
Checking the vacuum in the throttle body vacuum hoses of a four-cylinder engine
Checking the vacuum in the throttle body vacuum hoses of a six-cylinder engine
1. Check that the accelerator cable moves smoothly and without sticking.
2. Start the engine, disconnect the vacuum hoses from the throttle body one by one and use your finger to determine if there is vacuum in the hoses (see Fig. Checking the vacuum in the vacuum hoses of the throttle body of a four-cylinder engine and Fig. Checking the vacuum in the vacuum hoses of the throttle body of a six-cylinder engine).
Replacement
Throttle body parts
1 – additional air hose; 2 – coolant supply hose; 3 – throttle cable; 4 – accelerator cable; 5 – EVAP hose; 6 – EGR temperature sensor; 7 – vacuum hose; 8 – gasket; 9 – EVAP hose; 10 – throttle body; 11 – throttle position sensor connector; 12 – EGR temperature sensor bracket; 13 – EGR temperature sensor connector; 14 – IAC valve connector; 15 – air intake hose; 16 – coolant supply hose
1. Remove the ground cable from the battery.
Warning: If your radio has an anti-theft code, make sure you have the connection codes before disconnecting the battery.
Caution! On models from 1993 onwards, the airbag system is disabled if the battery is disconnected for an extended period of time. If the airbag warning light comes on and remains on after the battery is reconnected, contact a specialist workshop to restore the system to working order.
2. Drain the coolant from the radiator.
3. Loosen the clamps and remove the air intake hose. Disconnect the accelerator cable from the throttle control lever and the accelerator cable housing from the throttle body.
4. Label and disconnect the vacuum and coolant supply hoses from the throttle body.
5. Disconnect the electrical connector from the throttle position sensor.
(This material is taken from a resource: «ToyotaMAN.ru»)
6. Unscrew the 4 throttle body mounting bolts.
7. Remove the throttle body with gasket from the intake manifold (see fig. Throttle body parts).
8. Using a soft brush, clean the throttle body, then blow out all passages with compressed air.
9. The throttle body is installed in the reverse order of removal.