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Torque Converter Lockup ?

Pharaoh XJ

NAXJA Forum User
Location
Cairo, EGYPT
I am currently working for an DIY AW4 stand alone steptronic push button shifter. I am making a selectable torque converter lockup.

I have a couple of questions for the tranny Gurus out there :
I know that it is bad to up/down shift with the TC locked up, my question is when does the TC lock on the regular TCU ?

What is the best scenario for the TC lock/unlock function ? When should it lock/unlock relative to the shifting of the gears ?
 
There is a write-up for a TC lockup switch, might have some info you are looking for.
 
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