The torque converter clutch can stick "on" after extended freeway driving causing the engine to stall when coming to a stop. Our technicians tell us when this occurs, the engine usually will restart and stall when put into gear. After allowing about twenty minutes for the engine and transmission to cool down, the engine will start and the transmission will operate normally. Replacing the torque converter clutch solenoid, transmission filter, and fluid will generally correct this issue.Google+
Car Problem Reports
Pontiac Sunbird Torque Converter Clutch Can Stick After Extended Freeway Driving
Pontiac Sunbird Problem
The car would stall after I had driven for a while or at a fast speed. I could turn the car back on in park, but once I put it in drive the car would stall. I took it to several different shops and they all gave me different reasons and they were all wrong. My cousin was the one who figured it out.