Kia Forte: Knock Sensor (KS) 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.

Camshaft Position Sensor (CMPS) Installation

   • Install the component with the specified torques. • ...

Knock Sensor (KS) Specification

Item Specification Capacitance (pF) 850 ~ 1,150 ...

See also:

Fuel Pressure Test
1. Release the residual pressure in fuel line (Refer to the Fuel Delivery System - Repair Procedures - "Release Residual Pressure in Fuel Line"). ...

Door Switch Removal
1. Remove the door switch (A) after loosening the bolt. ...

Troubleshooting
Ignition System Symptom Suspect Area Remedy Engine will not start or is hard to start (Cranks OK) Ignition lock switch Inspect ignitio ...