how to troubleshoot Honda Civic 10th Generation (2016-2021) stalling issues

Solution

1. Preparation

• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Fuel System Inspection

• Tools Required: Fuel pressure gauge, socket set
• Steps:
  1. Locate the fuel pressure test port on the fuel rail.
  2. Attach the fuel pressure gauge to the test port.
  3. Turn the ignition to the "ON" position without starting the engine and check the fuel pressure reading.
  4. If the pressure is below specifications (consult service manual), replace the fuel pump.

3. Air Intake System Cleaning

• Tools Required: Throttle body cleaner, soft cloth
• Steps:
  1. Remove the air intake duct connected to the throttle body.
  2. Spray throttle body cleaner into the throttle body while opening the throttle plate manually.
  3. Wipe away carbon buildup with a soft cloth.
  4. Reconnect the air intake duct securely.

4. Spark Plug and Ignition Coil Replacement

• Tools Required: Socket set, torque wrench
• Steps:
  1. Remove the ignition coil cover if applicable.
  2. Disconnect the electrical connectors from each ignition coil.
  3. Unbolt the coils and remove them from the spark plug wells.
  4. Remove the old spark plugs using a spark plug socket.
  5. Install new spark plugs, ensuring they are gapped to manufacturer's specifications.
  6. Reinstall the ignition coils and reconnect the electrical connectors.

5. MAF Sensor Inspection

• Tools Required: MAF sensor cleaner, screwdrivers
• Steps:
  1. Locate the MAF sensor in the air intake system.
  2. Disconnect the electrical connector and remove the mounting screws.
  3. Carefully remove the MAF sensor from its housing.
  4. Spray MAF sensor cleaner on the sensing elements to remove dirt and residues.
  5. Allow it to dry completely before reinstallation.

6. Throttle Position Sensor Calibration

• Tools Required: OBD-II scanner
• Steps:
  1. After repairs, reconnect the negative battery terminal.
  2. Use the OBD-II scanner to monitor the TPS values while operating the throttle.
  3. Ensure the TPS readings match the expected values throughout the throttle range.
  4. If necessary, recalibrate the TPS via the scanner according to the manufacturer’s instructions.