how to fix a Honda Civic 9th Generation (2012-2015) that keeps stalling?

Solution

1. Preparation

• Gather all necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is parked on a level surface and secure with wheel chocks.

2. Fuel System Inspection

• Remove the fuel pump relay from the fuse box.
• Turn the ignition key to the ON position (without starting) to relieve fuel pressure.
• Reinstall the relay and connect a fuel pressure gauge to the fuel line.
• Start the engine and check for proper fuel pressure (typically 40-50 psi for Honda Civic).
• If pressure is low, replace the fuel pump and filter.

3. Ignition System Check

• Remove the spark plug wires and inspect for damage or corrosion.
• Use a spark tester to check for spark at each ignition coil.
• Replace any faulty ignition coils or spark plugs as necessary.

4. Throttle Body Cleaning

• Remove the air intake duct to access the throttle body.
• Use throttle body cleaner and a soft cloth to clean the throttle plate and surrounding areas.
• Reinstall the air intake duct securely.

5. Battery and Alternator Test

• Use a multimeter to check battery voltage; it should be around 12.6 volts when fully charged.
• Start the engine and check the alternator output; it should be between 13.5 to 14.5 volts.
• Replace the battery or alternator if voltages are outside of specified ranges.