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Old 10-07-2009, 03:08 AM   #4 (permalink)
JoshuaM
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Join Date: Oct 2009
Location: Singapore
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Ok - I haven't done it yet - but as I understand TC lockup is established by hydraulically actuating a clutch in the torque converter housing such there is no slip. This is done by a solenoid allowing line pressure in the transmission to the TC lock-up clutch. This solenoid can be manually activated by applying current via a switch on the dash for example. Currently - TC lockup happens at about 90 km/hr. Living in Singapore - I hardly reach that speed, highway traffic is normally at 89 km/hr..... Nothing more frustrating than having the TC lock-unlock-lock-unlock all the time. Generally my box goes to 4th - highest - gear at 60, so I should lock from 65 km/hr onwards with a switch.
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