Vehicle with Automatic Transmission Lurching Forward Upon Starting Car

Introduction

If your vehicle with an automatic transmission lurches forward when you start it, it can be a disconcerting and potentially dangerous experience. There are a few possible causes for this problem, and it’s important to have it diagnosed and repaired as soon as possible.

Causes of Lurching

Low Transmission Fluid

One of the most common causes of lurching is low transmission fluid. When the fluid level is low, the transmission can’t properly engage the gears, which can cause the vehicle to lurch forward or backward when you start it.

Dirty Transmission Fluid

Dirty transmission fluid can also cause lurching. Over time, the fluid can become contaminated with metal shavings, debris, and other particles. This can clog the transmission’s filters and passages, which can lead to slipping gears and lurching.

Faulty Solenoids

Solenoids are electrical devices that control the flow of transmission fluid. If a solenoid fails, it can cause the transmission to shift gears erratically, which can lead to lurching.

Torque Converter Problems

The torque converter is a fluid coupling that connects the engine to the transmission. If the torque converter fails, it can cause the transmission to slip, which can lead to lurching.

Diagnosis and Repair

If you’re experiencing lurching when you start your vehicle, it’s important to have it diagnosed and repaired as soon as possible. A qualified mechanic will be able to determine the cause of the problem and recommend the appropriate repairs.

In most cases, the repair will involve replacing the transmission fluid, filter, and solenoids. If the torque converter is damaged, it may need to be replaced as well.

Prevention

There are a few things you can do to help prevent lurching:

• Check the transmission fluid level and condition regularly.
• Change the transmission fluid and filter according to the manufacturer’s recommendations.
• Avoid driving in harsh conditions, such as off-road or in deep snow.
• Have your vehicle serviced regularly by a qualified mechanic.

Conclusion

Lurching when starting a vehicle with an automatic transmission can be a serious problem. It’s important to have the problem diagnosed and repaired as soon as possible to avoid further damage to the transmission.