what should I check if my Acura MDX YF3 (2022-Present) won’t accelerate

Solution

1. Preparation

• Tools Required: OBD-II scanner, socket set, screwdriver set, multimeter, vacuum gauge.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to prevent any electrical issues during the repair.

2. Scan for Codes

• Connect the OBD-II scanner to the vehicle's diagnostic port.
• Turn the ignition to the "On" position without starting the engine.
• Retrieve and document any trouble codes, then clear them to see if they reappear.

3. Inspect the Throttle Body

• Remove the intake duct by loosening the clamps and disconnecting any sensors.
• Clean the throttle body using throttle body cleaner and a soft cloth.
• Reinstall the intake duct securely.

4. Check Fuel Delivery

• Locate the fuel pump relay in the fuse box and check if it is functioning properly.
• Use a multimeter to test the voltage at the fuel pump while attempting to start the engine.
• If there is inadequate voltage, replace the relay or inspect wiring for damage.

5. Air Intake Inspection

• Visually inspect the air filter and replace it if dirty or clogged.
• Check the air intake hose for cracks or loose connections that could cause a vacuum leak.

6. Inspect Vacuum Lines

• Trace all vacuum lines from the engine to components such as the brake booster and intake manifold.
• Replace any damaged or cracked vacuum hoses.