Possible causes of vibration when turning on the automatic transmission on a Ford Focus 2:
1. Problems with engine and gearbox mounts:
* Worn or torn engine or transmission mounts may allow them to move excessively, resulting in vibrations.
2. Malfunction in the drive system:
* Worn splines or damaged shafts can cause vibration when gears engage.
3. Low automatic transmission fluid level:
*Lack of automatic transmission fluid can lead to insufficient lubrication and increased friction, which causes vibrations.
4. Worn clutches:
* Worn clutches in the transmission can slip and cause vibrations when shifting gears.
5. Clogged solenoid:
* A clogged solenoid can delay or improperly apply hydraulic pressure, resulting in rough shifting and vibrations.
6. Problems with the electronic control unit (ECU):
* A faulty ECU may not control gear shifts correctly, causing vibrations.
7. Damaged flywheel:
*A damaged flywheel may cause vibration when engaging the transmission.
What to do:
* Check the level and condition of the automatic transmission fluid.
* Visually inspect the engine and transmission mounts for wear or damage.
* Scan your vehicle for trouble codes that may indicate problems with the automatic transmission.
*Consult a qualified mechanic for further diagnosis and repair.