Toyota 22270-75050 Valve Assembly, Idle Speed Control

You can Select Your Vehicle to check if 22270-75050 fits your vehicle.

1. Detach the cable from the negative terminal of the battery. 2. Disconnect the electrical connectors at the ISC/IAC valve, TPS, and EGR/EVAP canister control solenoid. 3. Detach the accelerator cable and transmission linkage from the throttle body assembly. 4. Remove the EGA pipe from the EGA valve. 5. Label and detach the vacuum lines from the air intake plenum, EGA valve, and fuel pressure regulator. 6. Detach the PCV system by disconnecting the hose from the fitting on the air intake plenum. 7. Remove the plenum ground cable and bolt. 8. Detach the coolant hoses from the throttle body and plug them. 9. Remove the air intake plenum retaining bolts and nuts. 10. Remove the air intake plenum and throttle body as an assembly from the lower intake manifold.

Verify that the throttle linkage operates smoothly. Start the engine, detach each vacuum hose, and check the vacuum at each port on the throttle body with a vacuum gauge at idle and above idle, then compare observations with the accompanying tables.