Report: Torque Converter Clutch Can Stick After Extended Freeway Driving
Buick Century Problem
Average Mileage: 157,923 mi (140,000 mi - 180,000 mi)
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.
Visitor, 1990 Buick Century, 156,500 mi
Torque converter locks up when transmission gets warm. Then stalls when attempting to stop the vehicle in gear. Let cool for a few minutes and it's good as new, until the next time.
Visitor, 1991 Buick Century, 155,193 mi
after driveing a while when stoping the motor dies, will start up, but dies when put in gear then engene dies again with hard jolt.
When coming to a stop after extended driving - freeway or otherwise - car would stall. Took it to a mechanic friend, who disconnected the cable to the torque converter lock solenoid. Issue was corrected, but he advised I would not get optimal gas mileage, especially in freeway driving conditions.