Anchor Industries: Why Transmission Mounts Fail

Why Mounts Fail

  • Rapid Acceleration
  • Extreme Temperature Changes
  • Age & Atmosphere
  • Engine Torque & Vibration
  • Sudden Braking
  • Road Conditions

What Happens When Mounts Fail

1. Vibration
Worn mounts do not absorb vibration or the loads that result from normal engine and transmission operation. As a result, there is increased vibration transmitted to the passenger compartment. And with the advent of the front wheel drive, transverse mounted engine and even with the additional number of mounts used per vehicle, failed mounts still create noticeable vibration.

2. Accelerator Linkage Sticks
When a mount is broken, it can no longer support the engine in the proper manner. During acceleration it can lift up and cause the accelerator linkage to bind by varying degrees or may cause it to stick in the wide open position.

3. Fan Scrapes
Should the engine sag abnormally or rise during acceleration due to collapsed mounts, the fan may be far enough out of position to strike the radiator or the shroud.

4. Misalignment
Worn or broken transmission mounts affect the true alignment between the powertrain and frame which is vital to efficient operation. If left unrepaired it will put added stress on other related components, including CV shafts, U-joints, bearings, etc.

5. Misaligned Transmission Linkage
Broken mounts cause misalignment of transmission linkages. This can result in harsh shifts. It can also cause shifts at improper speeds or cause slipping.

6. Road Debris
Under normal driving conditions dirt and debris can get lodged into the transmission mount, causing premature wear and failure.

For more information download the pdf document here.