OEM 2005 Toyota Corolla Throttle Body

2005 Toyota Corolla Parts Questions & Experts Answers

• Q: How to replace the throttle body on 2005 Toyota Corolla?

  A: The throttle body replacement starts with disconnecting the battery negative terminal followed by draining engine coolant. To remove the cylinder head cover No. 2 detach its two nuts along with two retaining clips. You must first disconnect the mass air flow sensor connector and the VSV connector along with the 2 wire harness clamps while disconnecting fuel vapor feed hoses No. 1 and No. 3 from the VSV and the ventilation hose No. 1 from the cylinder head cover. The bolt securing the hose clamp enables air cleaner hose No. 1 to disconnect before removing the air cleaner cap along with the hose. The throttle body assembly requires removal of its 2 bolts, 2 nuts and both water by-pass hoses and throttle control motor connector before removing the throttle body to obtain the intake manifold gasket. Put a new gasket on the intake manifold before inserting the throttle body with its 2 bolts and 2 nuts while tightening them to 9.0 Nm (90 kgf.cm, 80 in.lbf). First rejoin water by-pass hoses No. 2 and then connect the throttle control motor connector. The installation of the air cleaner cap sub-assembly requires screwing the hose clamp bolt while attaching the air cleaner hose with a torque of 2.0 Nm (20 kgf.cm, 18 in.lbf). First install the ventilation hose No. 1 to the cylinder head cover before proceeding with the fuel vapor feed hoses No. 3 and No. 1 connection to the VSV and subsequently securing the 2 wire harness clamps along with reconnecting the VSV and mass air flow meter connectors. Attach the battery negative terminal with a torque specification of 5.4 Nm (55 kgf.cm, 48 in.lbf). After that add engine coolant then verify leak-free operation. End the maintenance by installing cylinder head cover No. 2 using 2 nuts and 2 clips while torquing them to 7.0 Nm (71 kgf.cm, 62 in.lbf).