Kia Optima: Exhaust Emission Control System / Catalytic Converter

Kia Optima DL3 2019-2020 Service and Repair Manual / Emission Control System / Exhaust Emission Control System / Catalytic Converter

Description and operation
Description

The catalytic converter of the gasoline engine is a three way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from the oxides of nitrogen (NOx).

Repair procedures
Removal
[Catalytic Converter (WCC)]
1.

Remove the exhaust manifold.

(Refer to Engine Mechanical System - "Exhaust Manifold")

[Catalytic Converter (UCC)]
1.

Remove the Center Muffler.

(Refer to Engine Mechanical System - "Center Muffler")

Installation
1.

Install in the reverse order of removal.

Exhaust Emission Control System
Description and operation Description Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components. Modifica ...

CVVT (Continuous Variable Valve Timing) System
Description and operation Description Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM con ...

Other information:

Kia Optima DL3 2019-2020 Owner's Manual: Automatic transmission operation


The automatic transmission has 6 forward speeds and one reverse speed. The individual speeds are selected automatically, depending on the position of the shift lever. ✽ NOTICE The first few shifts on a new vehicle, if the battery has been disconnected, may be somewhat abrupt. This is a norma ...

Kia Optima DL3 2019-2020 Service and Repair Manual: Electric Parking Brake (EPB)


Description and operation Description The electronic parking brake (EPB) is different from existing parking systems which operated with the brake pedal or the lever type. The EPB system sends the signal to the ECU when a driver operates the EPB switch. The ECU operates the EPB ac ...

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