The solenoid in an automatic transmission is essentially a mechanism with a valve that controls fluid. The transmission control unit (TCU) houses the solenoid and if the valve doesn't operate ...

Trouble is, that left the car’s computer convinced that the many solenoids and sensors ... To convince the transmission control module that a working automatic was still installed and clear ...

Ford has divulged the technical intricacies of its new 10-speed automatic transmission ... by new direct-acting electric solenoids that give more control over the process and deliver a quicker ...