Why does the new Santana automatic transmission have a jerky feeling when shifting from first to second gear?
2 Answers
New Santana automatic transmission may have a jerky feeling when shifting from first to second gear due to valve body blockage or engine issues. Valve body blockage: The jerky feeling when shifting from first to second gear is generally caused by stubborn dirt and impurities inside the transmission. When these contaminants accumulate in the valve body, they form blockages that prevent effective regulation of oil pressure, resulting in jerky shifting. This issue can only be completely resolved by thoroughly cleaning out the stubborn dirt and impurities inside the transmission. Engine issues: In most cases, poor acceleration in a car is closely related to the engine. The ignition system, intake system, and fuel injectors collectively determine fuel combustion, which is also the power source of the engine.
I used to drive a Santana automatic transmission, and the gear shift jerking was particularly annoying. This is likely due to insufficient transmission fluid or degraded fluid quality. If the fluid level is low, inadequate lubrication can cause strong impacts during gear shifts. I once checked the dipstick myself and found that new cars occasionally leave the factory with insufficient fluid. Additionally, driving habits play a big role: stomping on the accelerator at startup causes the engine RPM to be too high, making the shift from first to second gear prone to jerking. The first few thousand kilometers are the break-in period for a new car, where parts need to adapt, and the issue might improve after some driving. If the jerking persists, it could be a control unit issue, requiring a timely computer diagnostic at the shop. I recommend checking the fluid level monthly and changing the fluid every two years to prevent major transmission problems. Driving smoothly and avoiding sudden acceleration is beneficial for both the car and the driver.
