What is the knock sensor? How does it work?

 

Modern vehicles rely on sensors during the working process by connecting the vehicle components to the computer to analyze the data and extract the right rates for better working process, and the most important sensors in all working process sensors in the "knock sensor".

 

What is the knock sensor? How does it work?

The knock sensor detects vibrations that come from a knock or an irregularity in combustion and send a signal to the engine control computer, which then adjusts timing to correct the knock.

The important function of the knock sensor is to send the data via signals to the vehicle's control units to provide or delay the combustion process, as well as to increase and adjust the fuel mixture and air to minimize the pollution.

 

The knock sensor is located on the engine block, cylinder head or intake manifold. This is because its function is to sense vibrations caused by engine knock or detonation. The PCM uses this signal to alter the ignition timing and prevent detonation.

Read more:  Keep your car clean following these tips

 

How to deal with the knock sensor in your vehicle?

It is worth remembering that the knock sensor must be changed when a problem occurs in the vehicle engine. The only solution to this main sensor is to change it, not to repair or clean it. When it expires, it must be replaced immediately.

 

In order to change the knock sensor when it's damaged, you have to follow these steps:

Unplug the main ground power cable

Disconnect the electricity circuit for the sensor that connected to the motor circuit.

Unscrew the screw that connects the knock sensor to the motor

 Install the new knock sensor in the same old sensor position

 

Further reading: Important tips to prolong the lifespan of your car breaks

 

It is necessary for every driver to pay attention to his vehicle and to be aware of every single strange sound coming out of it, especially if there are some problems that look simple at the beginning. Such these problems may lead to serious damages in the vehicle. Be always ready for any problem.

 

Read more: Stop these wrong beliefs about seatbelt

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