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Home >> Kia >> 2019 >> Optima EX >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 60 (Engine Cooling System (HEV)) >> Water Temperature Control Assembly (Engine) >> Repair Procedures >> Removal And Installation >> Water Temperature Assembly

Water Temperature Assembly

WARNING: This page is about a different variant/trim than selected.
WARNING:
  • Be sure to read and follow the "GENERAL SAFETY INFORMATION AND CAUTION " before doing any work related with the high voltage system. Failure to follow the safety instructions may result in serious electrical injuries.
  • Be sure to shut off the high voltage circuit according to the "High Voltage Shut-off Procedures" before doing any work related with the high voltage system to avoid serious electrical injuries.
  1. Shut off the high voltage circuit.

    (Refer to Engine Mechanical System - "HIGH VOLTAGE SHUT OFF PROCEDURE ")

  2. Remove the engine room under cover.

    (Refer to Engine and Transaxle Assembly - "ENGINE ROOM UNDER COVER ")

  3. Drain the coolant.

    (Refer to Cooling System - COOLANT ")

  4. Remove the air cleaner assembly.

    (Refer to Intake and Exhaust System - "AIR CLEANER ")

  5. Disconnect the purge control solenoid valve (PCSV) hose (A).
    G13076319Courtesy of KIA MOTORS AMERICA, INC.
  6. Disconnect the wiring connectors and harness clamps and remove the connector brackets around the water temperature assembly.
    G13076320Courtesy of KIA MOTORS AMERICA, INC.
  7. Remove the purge control solenoid valve (PCSV) bracket (A).
    G13076321Courtesy of KIA MOTORS AMERICA, INC.
  8. Disconnect the radiator upper hose (A).
    G13076322Courtesy of KIA MOTORS AMERICA, INC.
  9. Remove the EGR cooler pipe C (A).

    Tightening torque: 

    18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb.ft)

    G13076323Courtesy of KIA MOTORS AMERICA, INC.
  10. Disconnect the oil cooler coolant hose (A) and ATF cooler coolant hose (B).
    G13076324Courtesy of KIA MOTORS AMERICA, INC.
  11. Disconnect the EGR cooler coolant hose (A).
    G13076325Courtesy of KIA MOTORS AMERICA, INC.
  12. Remove the EGR cooler pipe B (A).

    Tightening torque: 

    18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb.ft)

    G13076326Courtesy of KIA MOTORS AMERICA, INC.
  13. Remove the electric control EGR valve from the water temperature assembly.

    (Refer to Engine Control/Fuel System - "ELECTRIC EGR CONTROL VALVE ")

  14. Remove the water temperature control assembly (A).

    Tightening torque 

    9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

    G13076327Courtesy of KIA MOTORS AMERICA, INC.
  15. Install in the reverse order of replacement.
    NOTE:
    • Install a new O-ring.
    • Clean surface on the O-ring and install the O-ring after wetting with water.
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