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Repair Procedures: Removal

Disconnect the battery negative (-) terminal.
Remove the intake manifold.
(Refer to Engine Mechanical System - "INTAKE MANIFOLD ")
Disconnect the Oil Pressure & Temperature Sensor (OPTS) connector (A).

Courtesy of KIA MOTORS AMERICA, INC.
Remove the OPTS (A).
Tightening torque:

35.3 - 38.2 N.m (3.6 - 3.9 kgf.m, 26.0 - 28.2 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.