why does my Volkswagen Passat B8 (2015-2022) accelerate slowly after a stop?

Solution

1. Preparation

• Gather tools and parts.
• Disconnect the negative battery terminal for safety.
• Ensure the vehicle is on a level surface and securely raised if necessary.

2. Clean the Throttle Body

1. Remove the air intake duct connected to the throttle body using a socket set.
2. Clean the throttle body with throttle body cleaner and a soft cloth or brush, ensuring the butterfly valve operates smoothly.
3. Reconnect the air intake duct securely.

3. Replace Air Filter

1. Locate the air filter housing and release the clips or screws.
2. Remove the old air filter and inspect the housing for debris.
3. Install a new air filter, ensuring it fits snugly.
4. Reattach the housing cover.

4. Test and Replace Fuel Pump (if needed)

1. Locate the fuel pump access panel in the trunk or under the rear seat.
2. Use a fuel pressure gauge to check the fuel pressure; it should meet manufacturer specifications.
3. If the pressure is low, remove the fuel pump assembly and replace the fuel pump and filter.
4. Reinstall the assembly and reconnect any electrical connectors.

5. Check and Replace Spark Plugs

1. Remove the ignition coil(s) by disconnecting the electrical connector and unscrewing the retaining bolts.
2. Extract the spark plugs using a spark plug socket and ratchet.
3. Inspect the spark plugs for wear or fouling; replace them if necessary.
4. Install new spark plugs and torque them to the manufacturer’s specifications.
5. Reinstall the ignition coils and connectors.