How do you fix a transmission that jerks real hard when driving on the road and stalls sometimes takes long time to shift gears?

Fixing a transmission that jerks, stalls, and has delayed gear shifting requires addressing the underlying issues within the transmission system. Here are some troubleshooting steps to consider:

1. Transmission Fluid: Check the transmission fluid level and quality. Low or dirty fluid can cause shifting problems and jerking. Ensure that the fluid is at the appropriate level and change it if it appears dirty or has not been replaced for a long time.

2. Transmission Filter: A clogged transmission filter can restrict fluid flow and affect gear shifting. Replace the transmission filter if it's dirty or blocked.

3. Solenoids: Transmission solenoids control the flow of fluid within the transmission. Faulty solenoids can cause erratic gear shifting and stalling. Test and replace any faulty solenoids.

4. Torque Converter: The torque converter is responsible for transferring power from the engine to the transmission. If the torque converter is damaged or worn, it can cause jerking and stalling. Check and repair or replace the torque converter if necessary.

5. Transmission Control Module (TCM): The TCM is the computer that controls the transmission's operation. A faulty TCM can cause various transmission problems, including jerking and delayed shifting. Scan for error codes and replace the TCM if needed.

6. Mechanical Issues: Internal transmission components, such as gears, shafts, and bands, can wear out or break over time. This can lead to jerking and stalling. Depending on the severity of the damage, these components may need to be repaired or replaced.

7. Diagnostic Tools: Use a diagnostic scanner to identify any fault codes stored in the transmission control unit (TCU) or engine control unit (ECU). These codes can provide important clues to the root cause of the problem.

8. Professional Diagnosis and Repair: If the problem persists or you suspect a complex issue, it's best to seek assistance from a qualified transmission specialist or mechanic. They can diagnose the exact cause and perform the necessary repairs to restore proper transmission function.

Remember, troubleshooting and repairing a transmission can be complex, and it's essential to be cautious and precise when working on this vital vehicle component. If you're not experienced with transmission repair, it's advisable to entrust the task to a qualified professional to ensure the proper diagnosis and repair of your transmission.