Automotive Knowledge

• Before you begin trying to remove your knock sensor, consider your knowledge of vehicle mechanics. Cars Direct warns, "... you need to have a pretty good working knowledge of how to work on cars to do this. Otherwise the money you think you might save doing it yourself may turn out to be a lot more than if you had just taken it into the mechanic."
  
  

Removing Other Parts

• Much of the labor and time involved in removing a knock sensor stems from the need to remove other parts. You will need to remove the engine's manifold. It is also necessary to disconnect other parts such as the radiator and its hosing, the power steering belt, and the alternator belt.
  
  

Knock Sensor Removal

• Once you finally locate the knock sensor, the job becomes easy. According to Car Tech Auto parts, you are likely to find that you only need to unscrew a single bolt and remove the harness. Some vehicles have knock sensors that are held in place with clamps.