Your vehicle also upholds the motto that prevention is better than cure. This is proven by the part that is called as the knock sensor. It is connected to your vehicle's computer system in order to determine and serve as a warning signal against engine knocks. This occurs when the spark plug fails to trigger the fuel operations properly. As a result, your engine cannot run smoothly. With your knock sensor, the first sign of engine trouble can be avoided. However, it can wear out over time. Hence, you need to have a replacement. Here are important things that you must keep in mind if you are about to make a purchase for a new knock sensor.
Different types of knock sensor
Whether you love driving off-road or on normal paths only, there are two types of knock sensor that you can pick from:
- Broadband single wire sensor: This is the older type of knock sensor in the automotive market. It works by observing and identifying the standard range of engine noise from its operations. Once the broadband single wire sensor detects a noise that is higher than the usual, it will send a signal to your vehicle's electronic control unit (ECU). This type of knock sensor can be able to detect a huge variation in the rates of the engine noise. It also has electromagnetic resistance so that it can function smoothly.
- Flat response two-wire sensor: This second type of knock sensor is the newer design introduced. Its difference from the broadband single wire is that it already has a programmed range of engine noise frequency. If there is an engine knock, the flat response two-wire sensor will respond by giving out a higher voltage than the predetermined frequency range. As a newer type of sensor, it is more accurate than the broadband single wire.
Other things to consider
Both types of sensors has the same piezoelectric element that allows them to send signals to a vehicle's electronic control unit (ECU). However, you must pick which type is compatible with the ECU of your vehicle. Some knock sensors that are available in the market come in a complete assembly, while others come in a single item only. It still depends on your driving needs.