What does the knock sensor do?Car knock sensor replacement in Hamilton

As a car owner, it’s important to understand the importance of regular maintenance to ensure your vehicle runs smoothly and safely. One of the most critical, yet overlooked components of your engine is the knock sensor.

Car knock sensors, also known as detonation sensors, play an important role in maintaining the performance and longevity of your vehicle. These sensors detect abnormal combustion in the engine and send signals to the engine control module to adjust the ignition timing and fuel injection, in order to prevent engine damage. Over time, car knock sensors can become worn or damaged, leading to poor engine performance and increased emissions. Replacing your car knock sensor is an important task that can help to improve the overall performance of your vehicle.

Unfortunately, over time, the knock sensor can become worn or damaged, leading to poor engine performance and increased emissions. When this happens, it will need to be replaced in order to get your engine running optimally again.


Symptoms of a faulty knock sensor:

A faulty knock sensor will cause your engine to not perform properly. This can lead to the following symptoms occurring:

Check engine light – Any abnormality in your engine’s combustion process can trigger the check engine light. If the knock sensor isn’t working correctly, the spark plugs may not ignite the air/fuel mixture correctly and the check engine light on your dashboard will be triggered.

Reduced acceleration – A bad knock sensor will often reduce your car’s ability to accelerate, especially at higher speeds. This is because of the slowed down or incorrect ignition timing.

Reduced fuel economy – Incorrect ignition caused by a faulty knock sensor can also affect your car’s fuel use. You will lose power and your car won’t burn fuel as effectively.

Increased fuel emissions – Your car will likely produce increased exhaust emissions if the knock sensor is faulty. This can lead to it failing its Warrant of Fitness.

Emissions WOF requirements in NZ >


New Knock Sensor & Replacement in Hamilton

Is your car in need of a new knock sensor? If so, we can help! At Grimmer Motors, our team of skilled mechanics can thoroughly inspect your engine to determine if the knock sensor is the cause of your problems. If it is, we can remove the faulty unit and install a new one. This will allow for improved engine performance and fuel economy.

In addition to replacing the knock sensor, we also offer a full range of maintenance services including oil changes, tune-ups, and regular inspections of the engine and other components. This helps to ensure that your vehicle is running at its best and that any potential issues are caught early on.

Don’t let a faulty knock sensor put your engine and safety at risk. Contact us today to schedule your knock sensor replacement service and ensure your vehicle is running at its best.


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