Causes for Car Not Shifting Gear Transmission

When your car is not shifting gears properly, it can be a frustrating and dangerous
experience. There are a number of different things that can cause this problem,
ranging from simple to complex. In this article, we will discuss some of the most
common causes of car not shifting gear transmission and what you can do to fix them.

Low or Dirty Transmission Fluid

One of the most common causes of car not shifting gear transmission is low or dirty
transmission fluid. Transmission fluid is responsible for lubricating the moving
parts of the transmission and keeping them cool. If the fluid level is low or the fluid
is dirty, it can cause the transmission to slip and not shift gears properly.

To check the transmission fluid level, simply open the hood of your car and locate the
transmission dipstick. Pull the dipstick out and wipe it clean with a rag. Then, reinsert
the dipstick and pull it out again. The fluid level should be between the “min” and “max”
marks on the dipstick.

If the transmission fluid level is low, you need to add more fluid. You can purchase
transmission fluid at any auto parts store. Be sure to add the correct type of fluid for
your car.

If the transmission fluid is dirty, you need to have it flushed. A transmission flush is
a process of removing the old fluid and replacing it with new fluid. You can have a
transmission flush performed at any auto repair shop.

Faulty Shift Solenoids

Shift solenoids are electronic devices that control the flow of transmission fluid. If a
shift solenoid fails, it can cause the transmission to slip and not shift gears properly.

There is no way to test shift solenoids at home. If you suspect that a shift solenoid
is faulty, you need to have your car diagnosed by a qualified mechanic.

Faulty Torque Converter

The torque converter is a hydraulic device that connects the engine to the transmission.
If the torque converter fails, it can cause the transmission to slip and not shift gears
properly.

There is no way to test a torque converter at home. If you suspect that the torque
converter is faulty, you need to have your car diagnosed by a qualified mechanic.

Worn or Broken Gearshift Linkage

The gearshift linkage is a mechanical connection between the gearshift lever and the
transmission. If the gearshift linkage is worn or broken, it can cause the
transmission to not shift gears properly.

You can check the gearshift linkage for wear and tear by simply looking at it. If the
linkage is worn or broken, you will need to have it replaced.

Faulty Transmission Control Module (TCM)

The TCM is the computer that controls the transmission. If the TCM fails, it can cause the
transmission to slip and not shift gears properly.

There is no way to test the TCM at home. If you suspect that the TCM is faulty, you need
to have your car diagnosed by a qualified mechanic.

Conclusion

If your car is not shifting gears properly, it is important to have it diagnosed by a
qualified mechanic. The mechanic will be able to determine the cause of the problem and
recommend the best course of action.