my Honda CR-V has a rough idle when cold what should I check

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a flat surface and the engine is cool.
• Disconnect the battery to ensure safety while working on electrical components.

2. Inspect and Replace Spark Plugs

• Remove the ignition coils using a socket set (typically 10mm).
• Remove the spark plugs using a spark plug socket.
• Inspect the spark plugs for wear and replace if necessary with OEM-equivalent plugs (torque to manufacturer specifications, usually around 13 ft-lbs).
• Reinstall the ignition coils.

3. Clean the Throttle Body

• Remove the air intake duct connected to the throttle body (use a flathead screwdriver or clamp pliers).
• Use throttle body cleaner and a soft cloth to clean the throttle body interior.
• Ensure the throttle plate moves freely and is not sticking.
• Reattach the air intake duct securely.

4. Check and Replace Engine Coolant Temperature Sensor

• Locate the coolant temperature sensor (usually near the thermostat housing).
• Disconnect the electrical connector and remove the sensor using a socket or wrench.
• Install the new sensor and reconnect the electrical connector.

5. Inspect and Repair Air Intake System

• Visually inspect the air filter for dirt and replace if necessary.
• Check for any cracks or leaks in the air intake hose.
• Replace any damaged hoses to ensure proper air intake.