What are the reasons for the jerky sensation in the Focus transmission?

[VonMila]

Here are the specific reasons for the jerky sensation in the Focus transmission: 1. Engine oil passage blockage: The combustion of fuel is determined by the engine's ignition, air intake, and fuel injectors, which also serve as the power source of the engine. If the air intake decreases, the ignition weakens, or the fuel injection reduces, the power output will be insufficient, leading to a jerky sensation. 2. Dirty transmission fluid: This can cause damage to the solenoid valve. If sludge in the transmission fluid circulates and blocks the oil passages in the valve body, it will result in jerky sensations. Over time, this can lead to a series of transmission issues such as overheating, impact, and slippage. 3. Break-in period: A slight jerky sensation during driving is normal because the vehicle's power output and component engagement are not at their optimal levels. Additionally, the transmission's computer has a self-learning mechanism that requires continuous adjustment of oil pressure for gear shifting.