Kia Optima: Knock Sensor (KS). Description and Operation - Engine Control System - Engine Control/Fuel System - Kia Optima TF 2011-2025 Service ManualKia Optima: Knock Sensor (KS). Description and Operation

Description

Knocking is a phenomenon characterized by undesirable vibration and noise and can cause engine damage. Knock Sensor (KS) is installed on the cylinder block and senses engine knocking.

When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element. When a knock occurs, the sensor produces voltage signal. The ECM retards the ignition timing when knocking occurs. If the knocking disappears after retarding the ignition timing, the ECM will advance the ignition timing. This sequential control can improve engine power, torque and fuel economy.


Installation
• Install the component with the specified torques. • Note that internal d ...

Knock Sensor (KS). Specifications
Specification Item Specification Capacitance (pF) 850 ~ 1,150 ...

See also:

Towing service
If emergency towing is necessary, we recommend having it done by an authorized Kia dealer or a commercial tow-truck service. Proper lifting and towing procedures are necessary to prevent d ...

Owner Maintenance Schedule
The owner or a qualified service technician should perform these vehicle inspections at the indicated intervals to ensure safe and dependable operation. Bring any problem to the attention of an aut ...

To Reset at a Faster Speed
1. Push the RES/ACCEL switch and hold it. 2. Accelerate to desired speed and release the RES/ACCEL switch. While the switch is pressed, the vehicle will gradually gain speed. ...

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