Car Rolling in Park New Transmission
Causes
There are a few possible causes for a car rolling in park with a new transmission. These include:
- Low transmission fluid: If the transmission fluid is low, it can cause the transmission to slip, which can lead to the car rolling in park.
- Worn transmission bands: The transmission bands help to hold the transmission gears in place. If the bands are worn, they can allow the gears to slip, which can cause the car to roll in park.
- Faulty transmission valve body: The transmission valve body controls the flow of transmission fluid. If the valve body is faulty, it can send the wrong signals to the transmission, which can cause the car to roll in park.
- Defective torque converter: The torque converter helps to transfer power from the engine to the transmission. If the torque converter is defective, it can cause the transmission to slip, which can lead to the car rolling in park.
Symptoms
In addition to rolling in park, a car with a new transmission may also exhibit the following symptoms:
- Slipping gears: The transmission may slip gears while driving, which can cause the car to jerk or hesitate.
- Leaking transmission fluid: If the transmission is leaking fluid, it can cause the fluid level to drop, which can lead to the car rolling in park.
- Burning smell: If the transmission is overheating, it may produce a burning smell.
- Noisy transmission: The transmission may make a whining or grinding noise while driving.
Diagnosis
If you suspect that your car is rolling in park due to a new transmission, you should take it to a mechanic for diagnosis. The mechanic will likely start by checking the transmission fluid level and condition. They may also perform a transmission pressure test to check the pressure of the transmission fluid. If the transmission fluid level is low or the pressure is incorrect, the mechanic may need to replace the transmission.
Treatment
The treatment for a car rolling in park with a new transmission will depend on the underlying cause. If the cause is low transmission fluid, the mechanic will simply add more fluid to the transmission. If the cause is worn transmission bands, the mechanic will need to replace the bands. If the cause is a faulty transmission valve body, the mechanic will need to replace the valve body. If the cause is a defective torque converter, the mechanic will need to replace the torque converter.
Prevention
There are a few things you can do to help prevent your car from rolling in park with a new transmission. These include:
- Regularly check the transmission fluid level and condition: The transmission fluid should be checked regularly, especially if you are towing or driving in hilly areas. The fluid should be a pink or red color and should not smell burnt.
- Have the transmission serviced regularly: The transmission should be serviced according to the manufacturer’s recommended schedule. This will help to keep the transmission in good working order and prevent problems from developing.
- Avoid towing heavy loads: Towing heavy loads can put a strain on the transmission and lead to problems. If you need to tow a heavy load, make sure to use a vehicle that is rated for towing.
- Drive in the correct gear: When driving on hills, always use the correct gear. This will help to reduce the strain on the transmission.
Conclusion
If your car is rolling in park with a new transmission, it is important to take it to a mechanic for diagnosis. The mechanic will be able to determine the underlying cause of the problem and recommend the best course of treatment.
