Hyundai Elantra Owners and Service Manuals

Hyundai Elantra: Exhaust Emission Control System / Catalytic Converter

Hyundai Elantra (CN7) 2021-2025 Service 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.

    Description and operation

    DescriptionExhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components.Modifications to the combustion chamber, intake manifold, camshaft and ignition system form the basic control system...

    CVVT (Continuous Variable Valve Timing) System

    Description and operation DescriptionContinuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine speed and load...

    Other information:

    Hyundai Elantra (CN7) 2021-2025 Owner's Manual: Function settings


    Setting Rear Cross-Traffic Safety With the engine on, select ‘Driver Assistance → Parking Safety → Rear Cross- Traffic Safety’ from the Settings menu to turn on Rear Cross-Traffic Safety system and deselect to turn off the system. WARNING When the engine is restarted, Rear Cross-Traffic Safety system will always turn on...

    Hyundai Elantra (CN7) 2021-2025 Service Manual: Heated Oxygen Sensor (HO2S)


    Description and operation DescriptionHeated Oxygen Sensor (HO2S) consists of the zirconium and the alumina and is installed on upstream and downstream of the Manifold Catalyst Converter (MCC).In order that this sensor normally operates, the temperature of the sensor tip is higher than 370°C (698°F)...

    Categories

    Tire Rotation

    To equalize tread wear, HYUNDAI recommends that the tires be rotated according to the maintenance schedule or sooner if irregular wear develops.

    During rotation, check the tires for correct balance.

    When rotating tires, check for uneven wear and damage. Abnormal wear is usually caused by incorrect tire pressure, improper wheel alignment, out-ofbalance wheels, severe braking or severe cornering. Look for bumps or bulges in the tread or side of the tire. Replace the tire if you find any of these conditions. Replace the tire if fabric or cord is visible. After rotation, be sure to bring the front and rear tire pressures to specification and check lug nut tightness (proper torque is 79~94 lbf·ft [11~13 kgf·m]).

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