Why does my car stop pulling once it reaches normal operating temperature?

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your Century. If your car stops pulling when it reaches operating temperature, the issue may be with the transmission. When the transmission fluid heats up, it becomes thinner, revealing or worsening issues like low fluid pressure or worn internal components. Start by checking the transmission fluid level and condition; it should be at the correct level and a healthy red color. Topping it up may help if it's low, but a leak might be the root cause. If the fluid level is acceptable, the problem may be due to an internal component like the valve body, which can develop issues as it warms up, or a failing torque converter that loses efficiency under heat. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!