The density of an object is the mass of the object compared to its volume. The equation for density is: Density = mass/volume or D = m/v. Each substance has its own characteristic density because of the size, mass, and arrangement of its atoms or molecules.
Rating Newest Oldest. Best Answer: The knock sensor is basically a microphone. Its there to listen for spark knock which is also called detonation, pinging, and pre ignition. This is the condition inside the engine where the fuel begins to burn before its supposed to. It sounds like someone rattling a can of marbles. It can easily destroy the internals of an engine.
According to Repairpal.com, symptoms of a bad knock sensor include poor acceleration, knocking noises during acceleration, poor fuel mileage and a visible check engine light. The symptoms of a bad... According to Repairpal.com, symptoms of a bad knock sensor include poor acceleration, knocking noises during acceleration, poor fuel mileage and a visible check engine light.