When the fuel mixture in the cylinders explodes during the internal combustion process can cause the detonation of the engine. The engine has a knock sensor that can be used to detect the vibrations and send a voltage signal to the powertrain control module. When the knock sensor of your car is malfunctioning or damaged, it can create disturbances in the smooth functions of the engine as well as the car. When the knock sensor of your car is damaged are you in the confusion that how could you recognize it. Here the given slides will help you to recognize the bad knock sensor of your car easily.

1. Know the Symptoms of a Bad Knock Sensor

2. Engine detonation happens during the internal
combustion process when the fuel mixture in
the cylinder explodes and results in a change in
the ignition timing.

3. This detonation is known as engine knocking
and there are knock sensors that detect such
vibrations and send a voltage signal to the
powertrain control module.

4. The PCM works to alter the ignition's timing
and thus helps to prevent the engine
detonation and avoids serious damage to the
engine.

5. But, as the knock sensor is an electronic device,
it can malfunction at times and cause
disturbances in the functioning of the engine
and the car.

6. Here, are some of the commonly observed
symptoms in a car when the knock sensor turns
bad.

7. Engine warning
light

8. The engine warning light glows up on your
dashboard when there is any problem with the
engine.

9. So, even when the knock sensor fails to
operate then also the warning light illuminates
and alerts the driver of a possible issue in the
engine.

10. Get the engine checked by a professional as it
might be some issue with the warning light.

11. Loud sounds

12. When the knock sensor starts to malfunction,
there are instances of loud noises coming from
the engine.

13. The issue of sounds should be resolved quickly,
otherwise, the intensity of the sounds will just
go on rising with every passing day.

14. The main reason for the loud noises is due to
the ignition of the air-fuel mixture inside the
cylinder when the knock sensor is not actively
operating.

15. Bad fuel mileage

16. A bad knock sensor could also result in
decreasing the fuel mileage of the car.

17. There is more use of the fuel than the needed
proportion in the air-fuel mixture for the
process of combustion.

18. Also, at time unused fuel drains out of the car
through the exhaust outlet pipe.

19. Poor acceleration

20. While accelerating the car, if you experience
slow acceleration as compared to normal
conditions, then the bad knock sensor could be
contributing to that.

21. A faulty knock sensor prevents the acceleration
from being effective as it obstructs the
sufficient combustion of the fuel mixture in the
engine.

22. If along with the other symptoms, there is poor
acceleration, then get the knock sensors
checked by a technician.

23. Poor engine
performance

24. The worst symptoms due to a bad knock
sensor will occur when the engine starts to get
damaged and delivers very poor performance.

25. Also, there can be a burning smell coming from
the engine into the cabin due to serious issues
in the engine.

26. In such case, the knock sensor must be
immediately replaced or else the car will begin
to continuously drag and jerk around.

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