How to Check the Condition of a Used Car's Transmission?
2 Answers
Check if there is any oil leakage from the transmission oil pan. Start the engine, engage each gear, and observe whether the transmission jerks when shifting gears. Then proceed with a road test to assess whether the gear shifts smoothly and if there are any severe jerks or hesitations. Below is an introduction to the transmission: Composition: The transmission consists of a gear transmission mechanism and a control mechanism, with some vehicles also including a power output mechanism. The transmission mechanism mostly uses ordinary gear transmission, while some employ planetary gear transmission. Ordinary gear transmission mechanisms typically use sliding gears and synchronizers, among others. Function: The transmission is a crucial component in the vehicle's powertrain, serving the purpose of changing speed and torque. Without a transmission, the car cannot operate normally. The transmission is a mechanism used to alter the speed and torque from the engine, capable of fixing or changing the gear ratio between the output and input shafts, hence also referred to as a gearbox.
When buying used cars, I prioritize transmission condition since repairs are troublesome and costly. I always test drive first: start the engine, accelerate gradually while focusing on shift smoothness – noticeable jerks or delays indicate internal wear. After stopping, pop the hood to check for oil stains around the transmission; fresh fluid should be translucent red, while dark brown signals poor maintenance. Test gear shifts repeatedly, like switching from P to D, observing responsiveness. Also review service records for regular fluid changes and ask about driving habits – gentle driving protects transmissions. High-mileage vehicles (100,000+ km) require extra caution as wear risks multiply. Diligent attention to these details prevents wasted money and ensures worry-free driving.
