Why does an automatic transmission car not move in reverse without pressing the accelerator?
2 Answers
It may be due to a slope on the ground or the handbrake not being released. Below is the relevant information: 1. Automatic transmission: As the name suggests, an automatic transmission does not require the driver to manually shift gears. The vehicle will automatically select the appropriate gear based on the driving speed and traffic conditions. Generally, automatic transmission cars have six gear positions, from top to bottom: P, R, N, D, S, L. 2. Fuel consumption: The engine's power is transmitted through the gearbox, which is also a key factor affecting fuel consumption. Generally, automatic transmissions consume more than 10% more fuel than manual transmissions. Whether manual or automatic, the more gears a transmission has, the more fuel-efficient it is.
Oh, I've seen this issue many times. The main reason an automatic transmission car doesn't move when reversing without pressing the accelerator is insufficient power output at idle speed. The R gear in the transmission is designed to be quite sensitive, and the torque provided at idle isn't enough to move the vehicle's weight, especially if there's a slight slope or heavy cargo. When reversing, it's best to first check the slope condition and gently apply some throttle - if it moves then there's no major problem. Another factor could be the vehicle's idle speed being set too low, possibly due to aging or inadequate maintenance. Also, electronic systems like traction control or hill start assist might limit initial movement to ensure vehicle stability. Regular maintenance of transmission fluid and sensors is recommended, and ensuring the road is relatively flat before reversing makes the operation safer and more reliable.
