1. Worn Differential Mountings: Worn differential mountings can cause knocking noises from the rear end during acceleration and shifting. Inspect the differential mountings for any signs of damage, excessive play, or wear. Replace the mountings as necessary.
2. Driveshaft Issues: A faulty or damaged driveshaft can also lead to knocking noises and shaking. Check for any signs of damage, such as dents or bends, and ensure that the driveshaft is properly secured. Balancing or replacing the driveshaft may be necessary if it's the source of the problem.
3. Transmission Issues: Transmission-related issues, such as worn or damaged synchronizers, can cause knocking noises when shifting. Have the transmission inspected by a qualified mechanic to identify any problems and determine if repairs or replacements are needed.
4. Wheel Bearing Issues: Worn or damaged wheel bearings can create knocking noises and shaking, especially during acceleration and cornering. Inspect the wheel bearings for any signs of play or excessive wear. Replace any faulty wheel bearings.
5. Faulty CV Joints: Worn or torn CV (constant velocity) joints can also cause knocking and shaking during acceleration and shifting. Check the CV joints for any signs of damage, such as torn boots or excessive play. Replace the CV joints if necessary.
6. Rear Differential Issues: Problems with the rear differential itself, such as worn gears or low fluid levels, can also lead to knocking sounds and shaking. Check the differential fluid level and condition and have the differential inspected by a qualified mechanic if necessary.
It's important to have your car diagnosed by a professional mechanic to accurately identify the source of the knocking and shaking during acceleration and shifting. Ignoring these symptoms can lead to further damage and more costly repairs in the future.
