Car Shaking: A Guide to Transmission Mounts
If you’re experiencing car shaking, particularly when you’re accelerating, shifting gears, or coming to a stop, your transmission mount may be the culprit. A faulty transmission mount can cause a range of problems, from uncomfortable vibrations to more serious issues like transmission damage.
What is a Transmission Mount?
A transmission mount is a rubber or metal component that connects the transmission to the frame of your car. Its primary function is to absorb vibrations and noise generated by the transmission and prevent them from being transmitted throughout the vehicle.
Symptoms of a Bad Transmission Mount
The most common symptom of a bad transmission mount is shaking. This shaking can occur under various driving conditions, including:
– Acceleration
– Shifting gears
– Deceleration
– Coming to a stop
– Idling
Other symptoms of a faulty transmission mount include:
– Noises: You may hear a clunking or rattling sound coming from the transmission area.
– Difficulty shifting gears: The transmission may feel difficult to shift, or you may experience grinding when shifting.
– Leaks: If the transmission mount is cracked or broken, it may leak transmission fluid.
Causes of Transmission Mount Failure
Transmission mounts can fail due to several reasons, including:
– Age and wear: Over time, the rubber in the transmission mount can deteriorate and become less effective at absorbing vibrations.
– Harsh driving: Driving over rough roads or towing heavy loads can put excessive stress on the transmission mount.
– Accidents: A collision can damage the transmission mount, leading to its failure.
Diagnosing a Bad Transmission Mount
Diagnosing a bad transmission mount can be relatively straightforward. Here’s what you can do:
1. Visual inspection: Check the transmission mount for any cracks, tears, or other damage.
2. Shaking test: Have someone start the car and put it in drive while you observe the engine compartment. If the engine shakes excessively, it may indicate a bad transmission mount.
3. Road test: Drive the car and pay attention to any vibrations or noises that occur under different driving conditions.
Replacing a Transmission Mount
Replacing a transmission mount is typically not a complex procedure, but it requires some mechanical knowledge and tools. Here are the general steps involved:
1. Safety first: Park the car on a level surface, engage the parking brake, and disconnect the battery.
2. Locate the transmission mount: It is usually located underneath the transmission, connecting it to the car’s frame.
3. Remove the old mount: Unbolt the bolts securing the transmission mount to the transmission and the frame.
4. Install the new mount: Carefully insert the new mount into place and tighten the bolts to the specified torque.
5. Reconnect the battery: Reconnect the battery and test drive the car to ensure the vibrations are gone.
Cost of Replacing a Transmission Mount
The cost of replacing a transmission mount varies depending on the make and model of your car. Typically, the parts cost ranges from $50 to $200, while the labor cost ranges from $150 to $300.
Conclusion
A faulty transmission mount can cause a range of problems that can affect the comfort and safety of your driving experience. If you suspect that your car’s shaking may be due to a bad transmission mount, it’s important to have it diagnosed and replaced promptly to avoid further issues.
