Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSKIA2011OPTIMA L4-2.0L TURBOREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMCRANKSHAFT POSITION SENSORSERVICE AND REPAIR
2011 Kia Optima L4-2.0L Turbo
Crankshaft Position Sensor: Service and Repair
2011 Kia Optima L4-2.0L TurboSECTION Service and Repair
Inspection
1. Check the signal waveform of the CMPS and CKPS using the GDS.
Specification:Refer to "Wave Form" Testing and Inspection
Removal
1. Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2. Disconnect the crankshaft position sensor connector (A).
3. Remove the protector (A).
4. Remove the installation bolt (A), and then remove the crankshaft position sensor.
Installation
CAUTION:
- Install the component with the specified torques.
- Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
CAUTION:
- Apply the engine oil to the O-ring.
CAUTION:
- Insert the sensor in the installation hole and be careful not to damage.
1. Installation is reverse of removal.
Crankshaft position sensor installation bolt:9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)
Crankshaft position sensor protector installation bolt (M6):9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb-ft)
Crankshaft position sensor protector installation bolt (M8):18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb-ft)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.