how to fix rough idle problem in Renault Clio V (2019-Present)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the battery to prevent electrical shorts.
• Allow the engine to cool if it has been running.

2. Inspect and Replace Spark Plugs

• Tools Required: Spark plug socket, torque wrench, gap gauge.
• Remove the ignition coils or wires to access the spark plugs.
• Use the spark plug socket to remove old spark plugs.
• Check the gap on new spark plugs and adjust to manufacturer specifications.
• Install new spark plugs and torque to the recommended value (usually around 15-20 Nm).

3. Clean or Replace Fuel Injectors

• Tools Required: Fuel injector cleaning kit or replacement injectors.
• Remove the fuel rail to access the injectors.
• If cleaning, use the injector cleaning kit as per instructions; if replacing, install new injectors.
• Reassemble the fuel rail and ensure all connections are secure.

4. Clean Throttle Body

• Tools Required: Throttle body cleaner, soft cloth, screwdriver.
• Remove the air intake duct to access the throttle body.
• Spray throttle body cleaner onto a cloth and wipe the throttle body surfaces, ensuring to clean around the butterfly valve.
• Reinstall the air intake duct securely.

5. Inspect and Replace Idle Air Control Valve (IACV)

• Tools Required: Socket set, torque wrench.
• Locate the IACV on the intake manifold.
• Disconnect electrical connectors and remove mounting bolts.
• Replace with a new IACV, ensuring it is seated properly and reconnect any electrical connectors.