If an automatic transmission car cannot pick up speed, you need to do the following methods:
1. Use the car diagnostic computer to check whether there is a fault code, and then you can repair it after troubleshooting.
2. Check whether the vehicle's spark plug is ablated. Weak ignition energy will also cause the vehicle to be weak.
3. Check the vehicle's air intake filter. If it is dirty, the air intake is not smooth, and the engine will be weak if there is less air.
4. Check the degree of dirt on the throttle valve. Excessive dirt will cause the throttle position signal to be inaccurate and the acceleration to be weak. Just clean the throttle valve:
1. Remove the throttle valve. Valve hose.
2. Open the throttle flap.
3. Use a brush to clean.
4. Use cleaning agent to spray.
5. Reinstall the hose and you are done.