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Spark plugs
Ignition coil
Glow plugs
Glow plug relay
Ignition leads
Distributor cap
Distributor rotor
Ignition distributor
Ignition module
Plug, spark plug
Engine control unit (ECU)
Repair kit, distributor
Brake discs
Shock absorber
Brake pads
Control arm
Engine oil
Clutch kit
Oil filter
Wheel hub
Turbo
Wheel bearing
Replace a Spare part Knock sensor – a defective one or if the limit of use has been already reached. Find out useful information about Knock sensor
The knock sensor is used to detect the amount of the combustible air-fuel mixture. It is installed in the engine cylinder block. The knock sensor detects the spontaneous combustion of the mixture and sends the corresponding signal to the control unit, which adjusts the settings of the ignition system.
5 tips on maintaining and replacing the knock sensor
The knock sensor doesn’t have a defined service life, therefore, it only needs to be replaced when it stops working.
If you suspect that there is a problem with the knock sensor, visiting a repair shop is recommended. Professionals will be able to carry out tests using specialized equipment.
If you do choose to remove the knock sensor in order to test it yourself, it is advised not to disassemble it, as leaks in the housing can cause further problems.
It is necessary to be careful when doing repair works in the engine compartment. Do not apply force to the knock sensor as this could damage it.
If you choose to replace the knock sensor yourself, it is necessary to make sure that it is fixed securely. The part should not be able to move at all.
Common problems with knock sensors - causes and symptoms.
Loss of air-tightness. This could be caused by a collision. Due to the loss of air-tightness, the control unit receives inaccurate readings. As a result, the engine RPM become unstable and vibration increases.
Corrosion damage to internal contacts. This is generally a consequence of exposure to moisture, that has got in through a crack in the housing. A symptom of this problem is the ‘Check Engine’ sign lighting up on the dashboard. The defect can also be detected during the computer diagnostic tests.
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