- If the transmission fluid is low, components that need lubrication won’t get the lubrication they need, which eventually leads to transmission slipping and slamming.
2. Dirty, Degraded, or Burnt Transmission Fluid:
- Transmission fluid that has never been changed or is no longer in good condition (due to heat or age) will not offer the adequate lubrication that the transmission needs to smoothly shift gears, which will cause the transmission to shudder and slam..
3. Faulty or Broken Motor Mounts:
- Engine mounts help absorb engine vibration and jolts. If these mounts fail, they can no longer isolate engine vibration and cause the transmission to shudder.
4. Transmission Solenoid issues:
- Transmission solenoids control the flow of fluid in and out of the torque converter clutch, which engages and disengages to enable the transmission to shift smoothly. If solenoids are damaged or faulty, the proper flow of fluid will be disrupted, which will cause the transmission to slam into gears.
5. Line Pressure Issues:
- Incorrect fluid pressure inside the transmission can be a cause of transmission shudder. For example, If there is too much fluid pressure, the transmission will slam into gear or shift with a harsh feel, while too low fluid pressure will result in the transmission slipping and shifting poorly.
6. Worn Gears:
- Worn gears can no longer mesh properly, which can cause transmission shudder and vibration.
7. Internal Issues:
- Internal transmission issues such as worn clutches, bands, or broken internal components can cause shudder and vibration.
