Quote:
Originally Posted by NeedForSpeed
The change to N/C solenoid from a N/O is the reason that a TCU for an early VTD transmission will not properly control a later VTD transmission.
This fact was determined independently and almost simultaneously by Harvey with his late UK-spec box controlled by 'early' programming maps, and by myself with a late JDM-spec box controlled by an early JDM TCU in our US-spec '92 Peacock Blue SVX.
Why the change? That in fact, is the question without an answer.
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"will not properly control a later VTD transmission." From this I would gather that the transmission worked in some fashion, but not properly. Exactly what function was not operating properly/correctly, when using the early type TCU?
