my Volkswagen Golf MK7.5 (2020-Present) has poor acceleration what's the cause

Solution

1. Preparation

• Gather tools and parts needed.
• Disconnect the battery to avoid electrical shorts.
• Ensure the work area is clean and well-ventilated.

2. Replace Air Filter

• Remove the air filter housing cover using a screwdriver or socket set.
• Take out the old air filter and clean the housing with a cloth.
• Install the new air filter, ensuring it fits snugly in place.
• Reattach the air filter housing cover and tighten screws.

3. Fuel System Inspection

• Connect a fuel pressure gauge to the fuel rail.
• Turn the ignition to the "on" position without starting the engine and check the pressure reading against manufacturer specifications.
• If pressure is low, check the fuel pump and fuel filter; replace if necessary.
• Reconnect any fuel lines and ensure there are no leaks.

4. Throttle Position Sensor Testing

• Locate the throttle position sensor on the throttle body.
• Disconnect the sensor connector.
• Use a multimeter to measure voltage output while moving the throttle plate.
• Compare readings to specifications; replace the sensor if out of range.

5. Ignition System Inspection

• Remove the ignition coils from the spark plugs.
• Inspect spark plugs for wear or fouling and replace as necessary.
• Use a multimeter to test ignition coils for resistance; replace any faulty coils.