OEM 2009 Toyota Highlander Intake Manifold

2009 Toyota Highlander Parts Questions & Experts Answers

• Q: How to remove the intake manifold on 2009 Toyota Highlander?

  A: The first step for removing the intake manifold requires discharging fuel system pressure. Unplug the cable from the negative battery terminal yet remain alert because system initialization procedures could be needed after connection. First remove the throttle body assembly before disconnecting both heater water hoses from the inlet and outlet. The process starts with separation of ACIS' vacuum switching valve assembly by detaching its 2 vacuum hoses together with 2 union to connector tube hoses and clamp and connector and finishing with bolt removal. Disconnect the union to connector tube hose in addition to the No. 2 ventilation hose from the intake manifold. The technician should first remove the No. 1 vacuum switching valve assembly with its attached fuel delivery pipe sub-assembly. The intake manifold requires removal by disconnecting four clamps and wire harness and dislodging two bolts while taking off the two wire harness brackets. The procedure starts by detaching the fuel vapor feed hose and vacuum hose with clamp and connector before removing the bolt as well as wire harness bracket. Connect the terminals of the connector to battery voltage between 1 to 3 seconds to shut the tumble control valves but maintain a maximum of 3 seconds to preserve the actuator. Begin by removing the bolt before you sever the two deformable clamps which connect the intake manifold to its bracket along with the detachment of the intake air control valve actuator connector and eventual extraction of the six bolts that fix the intake manifold into position. Any attempt to remove the valves before closing them will likely cause damage to them. Phase one ends with the removal of the intake manifold gasket followed by disconnecting two vacuum hoses from the intake manifold to extract the check valve. The workflow also includes taking the bolt from the wiring harness clamp bracket and extracting the engine mounting damper by removing its three bolts.