Removal & Installation (V8)
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 1997 BMW Z3, 1997 BMW M3, 1997 BMW 840Ci, 1997 BMW 740iL, and 1997 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.
- Remove engine cover. See Figure. Disconnect vacuum hoses to intake manifold and throttle body. Drain radiator and remove coolant expansion tank. Remove coolant manifold from rear of cylinder heads.
- Disconnect fuel feed and fuel return lines at engine. Disconnect fuel lines and fuel tank vent line at engine carrier. Disconnect fuel line and wiring from top of fuel vapor canister.
- Loosen hose clamps on idle speed controller and throttle body. Disconnect airflow sensor connector. Remove air cleaner housing/airflow sensor assembly. Raise and support vehicle. Disconnect oil level sensor connector. Disconnect and remove ignition coils.
- Disconnect crankshaft position sensor and both knock sensor connectors. Disconnect intake air temperature sensor, idle speed potentiometer and idle speed controller connectors. Remove BMW engine diagnostic connector socket from bracket. Disconnect connector next to BMW diagnostic connector socket.
- Remove bolt securing ignition coil ground wire (near engine lift bracket). Disconnect temperature gauge and temperature sensor connectors for DME (Black connector and White connector near engine lift bracket).
- Completely disconnect throttle cable from engine. Remove intake manifold. Mark knock sensor connectors for reassembly reference. Remove knock sensor(s). See Fig 1. To install, reverse removal procedure. Ensure knock sensors are connected to proper connectors.