Here's why:
* Torque Converter Function: The torque converter allows the engine to idle without stalling the transmission, crucial for starting. When you accelerate hard from a stop, the TCC should engage, locking the engine and transmission together for more efficient power transfer.
* Symptoms and TCC: A faulty TCC might not engage properly when starting from rest, leading to the initial stall. Once the car is moving and engine speed increases, the torque converter might still function enough for normal driving at higher speeds, but the engagement might be slipping.
Other possibilities, though less likely given the symptoms:
* Low Transmission Fluid: This is always a good first thing to check. Low fluid can cause all sorts of strange transmission issues, including stalling.
* Transmission Solenoids: These electrical components control various aspects of transmission function. A faulty solenoid related to TCC engagement could cause similar symptoms.
* Shift Linkage or Cable Issues (less likely): While less probable given the specific symptom of stalling *only* at initial acceleration, a problem with the linkage could theoretically impact clutch engagement.
In short: The most likely culprit is the torque converter clutch or related components. You should have a mechanic diagnose the issue to confirm the problem and determine if it's a simple repair or requires a more extensive transmission overhaul. Ignoring it could lead to further damage.
