Car Won’t Go Into Gear When Engine Running (Automatic)

Possible Causes and Solutions

If your car won’t go into gear when the engine is running, it can be a frustrating and potentially dangerous problem. There are a number of possible causes, but the most common include:

1. Low transmission fluid: The transmission fluid is responsible for lubricating and cooling the transmission components. If the fluid level is low, it can cause the transmission to slip and not engage properly. Check the transmission fluid level and add fluid if necessary.
2. Dirty transmission fluid: Over time, the transmission fluid can become contaminated with dirt and debris. This can cause the fluid to lose its lubricating properties and lead to transmission problems. Have the transmission fluid flushed and replaced regularly.
3. Faulty shift solenoid: The shift solenoid is responsible for engaging and disengaging the transmission gears. If the solenoid is faulty, it can prevent the transmission from shifting properly. Replace the faulty solenoid.
4. Faulty transmission control module: The transmission control module (TCM) is the computer that controls the transmission. If the TCM is faulty, it can send incorrect signals to the transmission, which can cause it to not shift properly. Have the TCM diagnosed and replaced if necessary.
5. Mechanical problems: In some cases, a car won’t go into gear because of a mechanical problem with the transmission. This could be due to a worn or broken gear, a damaged transmission case, or a faulty torque converter. These problems will require professional repair.

Troubleshooting Tips

If your car won’t go into gear, there are a few things you can do to troubleshoot the problem:

1. Check the transmission fluid level: The transmission fluid level should be checked with the engine running and the transmission in park. If the fluid level is low, add fluid until the level is correct.
2. Inspect the transmission fluid: The transmission fluid should be a bright red color and free of debris. If the fluid is dark or contains debris, it should be flushed and replaced.
3. Try shifting the transmission into different gears: If the transmission won’t go into gear when it is in park, try shifting it into neutral and then into drive. If the transmission still won’t go into gear, it may be necessary to have it towed to a repair shop.
4. Listen for any unusual noises: If you hear any unusual noises when you try to shift the transmission, it could be a sign of a mechanical problem. Have the transmission inspected by a qualified mechanic.

Conclusion

If your car won’t go into gear, it is important to have it diagnosed and repaired as soon as possible. Driving a car with a faulty transmission can be dangerous and could lead to further damage. By following the tips in this article, you can help troubleshoot the problem and get your car back on the road quickly and safely.