How A Knock Sensor Works?
Knock Sensor Working Of Car Knock Sensor Helpful Information Higher engine compression ratios require the use of higher octane fuels to help control detonation, these vehicles usually will have a label near the fuel door or in the owner's manual recommending the proper fuel for the engine. Common Problems When an engine has an internal malfunction which is causing noise, the knock sensor will be activated and signal the computer to make adjustments, if the computer makes these changes without result, the MIL (check engine, service engine soon) light will illuminate. This internal engine noise must be repaired before normal knock sensor operation will resume. Step by step guide on how an automotive knock sensor works. Step 1 - A knock sensor, which is located somewhere on the engine block is designed to detect engine combustion knock. This sensor performs this duty by utilizing a temperature sensitive diaphragm which is surrounded by piezo ceramic. Once the sens...