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why does my Honda Accord 10th Generation (2018-2022) have a rough idle when in drive? - Honda Accord
Home/Cars/Honda/Accord/8th Generation (2008-2012)/why does my Honda Accord 10th Generation (2018-2022) have a rough idle when in drive?

why does my Honda Accord 10th Generation (2018-2022) have a rough idle when in drive?

Honda Accord 8th Generation (2008-2012)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
3 min read
543 words

Problem Statement

Learn how to diagnose and fix rough idle issues in Honda Accord 10th Generation (2018-2022). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component
Engine
Estimated Time
2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

  • •Disconnect battery before working on electrical systems.
  • •Allow engine to cool before handling any components.

Symptoms

  • •Rough idle when the vehicle is in drive
  • •Engine stalling at low speeds
  • •Increased vibrations felt in the cabin
  • •Check engine light illuminated
  • •Poor fuel economy
  • •Unusual engine noises, such as knocking or pinging

Diagnostic Steps

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II scanner
  • •Socket set
  • •Torque wrench
  • •Spark plug socket
  • •Cleaning brush
  • •Throttle body cleaner

Parts Required

  • •Spark plugs
  • •Ignition coils (if necessary)
  • •Idle air control valve (if necessary)
  • •Engine mounts (if necessary)

Additional Information

Affected Component
Engine
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
6 items
Parts Required
4 items

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Solution
1. Preparation
  • Gather tools and parts needed for the repair.
  • Ensure the vehicle is parked on a level surface, and the engine is cool.
  • Disconnect the negative battery terminal.
2. Inspect and Replace Spark Plugs
  • Remove the engine cover (if applicable) using the socket set.
  • Disconnect the ignition coil connectors and remove the ignition coils using a socket.
  • Remove the spark plugs using a spark plug socket and inspect them for wear or fouling.
  • Replace spark plugs with OEM or recommended spark plugs, ensuring a gap of 0.044 inches.
  • Reinstall the ignition coils and reconnect the connectors.
3. Check and Clean the Idle Air Control Valve
  • Locate the idle air control valve (IAC) by following the intake manifold to the throttle body.
  • Disconnect the electrical connector and remove the IAC from the throttle body.
  • Clean the IAC and the throttle body with an appropriate cleaner.
  • Reinstall the IAC and ensure proper torque specifications are followed (typically around 89 inch-pounds).
4. Inspect Engine Mounts
  • Visually inspect engine mounts for signs of cracking or excessive wear.
  • Use a jack to support the engine slightly and replace any damaged mounts with OEM parts.
  • Ensure proper torque specifications are followed during reinstallation.
5. Reconnect Battery and Clear Codes
  • Reconnect the negative battery terminal.
  • Use the OBD-II scanner to clear any fault codes and reset the check engine light.