Removal (LS430)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 Lexus SC 430, 2002 Lexus RX 300, 2002 Lexus LX 470, 2002 Lexus LS 430, and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Knock sensors are located under intake manifolds on cylinder block. To remove knock sensors, upper and lower intake manifolds must be removed. Remove engine cover. Remove air cleaner inlet and intake air connector. Release fuel pressure. See FUEL SYSTEM PRESSURE RELEASE under FUEL SYSTEM. Disconnect fuel inlet hose.
- Remove throttle body from intake manifolds. See THROTTLE BODY under FUEL SYSTEM. Disconnect EVAP and ACIS vacuum switching valve connectors.
- Disconnect fuel injector connectors. See Figure. Disconnect brake booster vacuum hose from union on intake manifold. Disconnect PCV hose from upper intake manifold. Disconnect EVAP vacuum switching valve hose.
- Remove engine cover brackets. Disconnect wiring harness clamps from wire clamp brackets. Remove bolts and disconnect engine wiring harness protector at rear of engine.
- Remove bolts and disconnect engine wiring harness protector and wiring harness clamp bracket from intake manifold. Remove upper and lower intake manifolds as an assembly. Remove intake manifold gaskets. Disconnect knock sensor connectors. Remove knock sensors.