Automatic Transmission Car Shakes at Stop

Possible Causes

There are several possible causes for an automatic transmission car to shake at a stop. These include:

• Engine mounts: The engine mounts are rubber cushions that hold the engine in place. Over time, these mounts can wear out and become loose, which can cause the engine to shake.
• Transmission mounts: The transmission mounts are rubber cushions that hold the transmission in place. Like the engine mounts, these mounts can also wear out and become loose, which can cause the transmission to shake.
• Driveshaft: The driveshaft is a metal shaft that connects the transmission to the rear wheels. A worn or damaged driveshaft can cause the car to shake at a stop.
• U-joints: The U-joints are flexible joints that connect the driveshaft to the transmission and rear axle. Worn or damaged U-joints can also cause the car to shake at a stop.
• Torque converter: The torque converter is a fluid coupling that connects the engine to the transmission. A worn or damaged torque converter can cause the car to shake at a stop.

Diagnosis

To diagnose the cause of the shaking, a mechanic will typically:

• Inspect the engine mounts and transmission mounts for signs of wear or damage.
• Check the driveshaft for signs of wear or damage.
• Inspect the U-joints for signs of wear or damage.
• Check the torque converter for signs of wear or damage.

Repair

The repair for a shaking automatic transmission car will depend on the cause of the problem. If the engine mounts or transmission mounts are worn out, they will need to be replaced. If the driveshaft or U-joints are worn or damaged, they will need to be replaced. If the torque converter is worn or damaged, it will need to be replaced.

Prevention

There are a few things you can do to help prevent your automatic transmission car from shaking at a stop:

• Avoid putting your car in park when it is still rolling. This can put stress on the transmission mounts.
• Avoid shifting your car into drive or reverse too quickly. This can also put stress on the transmission mounts.
• Have your car’s transmission serviced regularly. This will help to keep the transmission in good condition and prevent problems from developing.

Conclusion

If your automatic transmission car is shaking at a stop, it is important to have it diagnosed and repaired as soon as possible. Shaking can be a sign of a serious problem, and it is important to address it before it causes major damage.