Kia Optima DL3: Power Train / Vapor Hose and Fuel Filler Cap

Repair procedures

Inspection

Vapor hose

1.

Check all the clamps for tightness and the connections for leakage.

2.

Visually check the vapor lines and hoses for cracks, leaks, loose connections, or deformation.

Fuel filler cap

1.

Visually check that the fuel tank cap assembly and gasket (A) are not deformed or damaged.

    Repair procedures Inspection Automatic Transaxle Fluid (ATF) Level Check    When checking the ATF level, be careful not to allow foreign substance (like dust) to enter through the filler hole.

    Other information:

    Kia Optima DL3 2019-2026 Service and Repair Manual: Evaporator Temperature Sensor

    Description and operation Description The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power in order to prevent evaporator from freezing by excessive cooling. The evaporator temperature sensor has the Negative Temperature Coefficient (NTC).

    Kia Optima DL3 2019-2026 Service and Repair Manual: Power Mosfet

    Description and operation Description It is installed to the DATC and adjusts the fan rpm by precisely controlling the voltage applied to the blower motor. Repair procedures Inspection 1. Turn the ignition switch ON.

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