Toyota 4 Runner Knock Sensor Location . I know this is an old topic but I've got an issue that won't go away. The knock sensor is basically a microphone, set to respond to the sound frequencies of engine The knock sensor now exposed is the only wire going to the engine block in this location. Ok. I read on toyo nation that changing the knock sensor ... (Bradley Becker) The manufacturer states throttle body and the intake manifold must be removed to access the knock sensor. I know this is an old topic but I've got an issue that won't go away. NW TeamYota & Toyota Parts Store. Refer to Intake Manifold service procedures. I know this is an old topic but I've got an issue that won't go away. | Repair Guides | Electronic Engine Controls | Knock ... Knock sensor location - Toyota 4Runner Forum - Largest ... New K...