|
i am nto sure of the full workings internally. it is electrically controlled by teh ECM or you can get stand alone controller kits.
when the computer/controller senses steady vacuum and medium to low load it will engauge the lock up. it is not a 100% lock up like a clutch would have, more like 98.5-99.5% in the better ones.
there are trigger switches on the brakes and throttle to disengauge the lock up as well. the nice thing about using the lock up with a computer, especially in the later electronically shifted transmissions, is that the lock up can be programmed in and out almost at will. so if you wanna grab a little trap speed you can jsut program the TC to go to full lock at a certain wheel speed, it will increase the driveline efficiancy and can usually pop out about 2 more mph.
there is a trick in the thirdgens to lock the TC at the track. if you jump terminals a nd f i think it is, the TC will lock up as soon as the car shifts into second gear. it isn't a huge difference in a typical street motored car, maybe worth a tenth or two and a little trap speed.
|