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Home >> Lexus >> 1998 >> ES 300 >> Repair and Diagnosis >> External Pages >> Different car >> Section 11 (Engine Controls - Remove/Install/Overhaul) >> Engine Sensors >> Knock Sensor >> Removal & Installation

Removal & Installation

WARNING: This page is about a different car, the 1997 Lexus ES 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect negative battery cable. Drain cooling system. Disconnect accelerator cable and A/T throttle cable. Remove air cleaner assembly. Remove "V" bank cover. See Figure. Disconnect power steering hose from No. 1 engine hanger.
  2. Remove PCV hose and valve from right cylinder head. Disconnect ground cable from air intake chamber. Remove brake booster vacuum hose from air intake chamber. Disconnect water by-pass hoses from throttle body.
  3. Remove air assist hose from throttle body. Disconnect EVAP hose from pipe on emission control valve set. Note location for installation reference and disconnect wiring harness connectors as necessary.
  4. Remove Data Link Connector No. 1 (DLC1) from bracket on Intake Air Control (IAC) valve. Remove No. 1 engine hanger. Remove air intake chamber stay. Remove No. 2 EGR pipe and gaskets. Label and disconnect vacuum hoses as necessary. Remove air intake chamber assembly and gasket.
  5. Disconnect fuel injector connectors. Disconnect coolant hoses and fuel hoses as necessary. Remove high-tension wire assembly. Remove fuel rails, fuel injectors and intake manifold as an assembly. Remove water outlet. Remove knock sensor(s).
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