What Causes the Gearbox of Song Pro to Jerk?
2 Answers
Gearbox jerking is due to a dirty valve body, which can be resolved using a no-disassembly solution. Reasons for gearbox jerking: The primary cause of gearbox failure is often a dirty valve body. A dirty valve body can degrade the quality and frictional properties of the transmission fluid, increasing friction and wear. Additionally, sludge can form inside the gearbox, leading to blockages in the valve body and pipelines. This disrupts the proper regulation of oil pressure, resulting in gearbox issues. Solutions for gearbox jerking: Use a no-disassembly solution, which causes no damage to the vehicle. This method also extends the transmission fluid change interval by 3-5 times and effectively controls the temperature of the transmission fluid.
I've been driving for over a decade and have encountered many transmission stuttering issues, especially with this BYD Song Pro's dual-clutch transmission. The most common cause might be the transmission fluid not being changed for a long time, becoming thick or dirty, affecting the smooth operation of the gears. Or it could be that the clutch plates are severely worn, causing jerks or stutters during gear shifts. I've also encountered software issues where the control unit wasn't updated properly, leading to slow engine response or strong jerking sensations. Additionally, if the car has been driven on rough terrain, such as muddy roads or long downhill slopes, dust entering the drivetrain can also cause stuttering. My advice is not to panic; first, check the fluid condition or visit a 4S shop for diagnostics—they can use equipment to pinpoint the exact issue. During daily driving, avoid slamming the accelerator and try to accelerate smoothly to protect the transmission, which can extend its lifespan. If the stuttering is severe, pull over to ensure safety before addressing the problem. Overall, the transmission is a precision component, and regular maintenance is key.
