Removal & Installation (LX470)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE under FUEL SYSTEM. Remove engine cover. Remove air intake hose with intake air connector located between throttle body and air cleaner assembly. See Fig 1.
Remove upper and lower intake manifold assemblies.
Remove throttle body from intake manifold. See THROTTLE BODY under FUEL SYSTEM.
Disconnect necessary knock sensor connectors.
Using Socket (SST 09816-30010), remove knock sensor(s) from cylinder block.
To install, reverse removal procedure. Install and tighten knock sensor to specification. See TORQUE SPECIFICATIONS . Using NEW intake manifold gaskets, install upper and lower intake manifold assembly and tighten bolts/nuts to specification.

Fig 1: Removing Knock Sensor (LX470)