Possible causes of vibration during acceleration in a front-wheel drive car with automatic transmission:
Transmission related:
* Faulty torque converter (donut): Worn or damaged donut can cause vibration when transmitting torque.
* Automatic Transmission Problems: Worn clutches, a faulty pump, or a problem with the hydraulic control unit can cause vibrations.
* Incorrect operation of automatic transmission sensors: Faulty sensors can distort the data entering the automatic transmission control unit, which leads to vibrations.
Related to drive shafts:
* Unbalanced Drive Shafts: Improperly balanced drive shafts can cause vibrations at certain speeds.
*Worn inner CV joints: Worn constant velocity joints can cause vibrations and clicking noises when driving.
Engine related:
* Sub-optimal ignition: Incorrect ignition settings can result in engine vibrations that are transmitted to the transmission.
*Engine mount problems: Worn or torn engine mounts cannot effectively dampen engine vibrations, causing the entire vehicle to vibrate.
Other possible reasons:
* Unbalanced wheels: Improperly balanced wheels can cause vibrations that increase during acceleration.
* Warped brake discs: Warped brake discs can cause vibrations during braking and acceleration.
* Incorrect wheel alignment: Incorrect wheel alignment can lead to increased tire wear and vibration when driving.