Here's a breakdown of what to do if you suspect a failed transmission mount:
1. Diagnosis:
* Symptoms: A failed transmission mount often manifests as:
* Excessive vibrations throughout the vehicle, especially at idle or low speeds.
* A noticeable clunking or banging noise when shifting gears or accelerating/decelerating.
* Movement or shifting of the transmission itself (rare, but possible).
* Vibrations felt more strongly in the floor or steering wheel.
* Inspection: With the vehicle safely supported on jack stands (never work under a vehicle supported only by a jack), visually inspect the transmission mount(s). Look for:
* Cracks or tears in the rubber bushing.
* Significant sagging or deformation of the rubber.
* Leaks of hydraulic fluid (if it's a hydraulic mount).
* Loose or broken mounting bolts.
2. Replacement (not repair):
This is the most practical solution. Replacing a transmission mount typically involves these steps:
* Gather Tools and Parts: You'll need jack stands, a jack, wrenches (sizes will depend on your vehicle), possibly a torque wrench, a new transmission mount, and possibly new bolts depending on their condition. Consult your vehicle's repair manual for the correct torque specifications.
* Safety First: Always support the vehicle securely on jack stands before working underneath. Disconnect the battery's negative terminal to prevent electrical shorts.
* Access the Mount: The location of the transmission mount(s) varies greatly depending on the vehicle's make, model, and year. Consult your vehicle's repair manual for precise location and access procedures. You might need to remove some components to get sufficient access.
* Remove the Old Mount: This usually involves unbolting the mount from both the transmission and the vehicle's chassis. Support the transmission to prevent it from dropping unexpectedly. A transmission jack is highly recommended for this step.
* Install the New Mount: Carefully install the new mount, ensuring it is properly seated and aligned. Tighten the bolts to the manufacturer's specified torque.
* Lower the Vehicle: Carefully lower the vehicle and reconnect the battery.
* Test Drive: Test drive the vehicle to ensure the vibration and noise issues are resolved.
3. Seeking Professional Help:
Replacing a transmission mount can be challenging, especially if you lack experience with automotive repair. If you're uncomfortable performing this repair yourself, it's best to take your vehicle to a qualified mechanic. They have the proper tools, experience, and safety equipment to handle the job correctly. A misaligned or improperly installed mount can cause further damage.
Important Note: Always consult your vehicle's repair manual for specific instructions and torque specifications. The procedure can vary significantly depending on the make and model of your car. Improperly performing this repair can lead to significant damage and potentially dangerous situations.
