A car knock sensor is located on the intake manifold, cylinder, or engine block. The purpose of the knock sensor is to sense unusual pulsations caused by the engine detonation. It is basically the computer’s ear to the engine to determine if it is working properly. Show To get a better understanding of how a faulty knock sensor reacts, note the points below:
The knock sensor senses the vibrations of the engine and will decrease acceleration until the sensor is replaced. With a faulty sensor, there is a chance that higher emissions are being produced from the engine because the engine may run hot. The Environmental Protection Agency does not allow such high emissions from a vehicle, which is why the decreased acceleration safety feature is put in place. The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details How long can I drive with a faulty knock sensor?How long can you drive on a bad knock sensor? Most cars' engine today has two knock sensors and if one goes out, you can still drive for a few hundred miles without even noticing it. It won't affect your vehicle's performance at all, as long as the other one doesn't go out too soon.
Can a knock sensor damage an engine?A faulty knock sensor can also cause the PCM to misadjust the ignition timing, resulting in poor engine performance. The knock sensor is typically screwed into the engine block or manifold.
What happens if you don't fix a knock sensor?If the knock sensor is not working then the engine could start pinging without the computer being able to detect it. This pinging can cause the combustion process to burn or blow holes in the pistons.
Can you drive without knock sensor?Can you drive with a bad knock sensor? If the engine will start and run but a warning light or fault code indicates a faulty knock sensor you can (probably) safely drive the car but the performance of the engine may be compromised.
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