2004 Toyota 4 Runner Knock Sensor Location . Wondering if it could be knock sensor and what is the function of a knock sensor. This may also be your issue and not the sensors themselves. Knock Sensor for 2006 Toyota Sienna|89615-06010 : Find ... (Matilda King) After a few seconds to a minute, the super rough running engine smooths out but light stays on. The knock sensor now exposed is the only wire going to the engine block in this location. So the knock sensor is not located in the same place that the old one was. Intermotor™ is a complete engine management import line that. ToyotaNation Forum is a community dedicated to all Toyota models. Toyota 4Runner Knock Sensor | eBay Toyota 4runner Knock Sensor Location Toyota Knock Sensor: Where Is the Knock Sensor on the 2004 ... Thrott