You have the wrong impression of how the delay is facilitated. When the car is cold (and I don't know the prarameters) the engine controller switched the switchover valve to place vacuum on the shift cable bacuum element. It continues with vacuum through all chifts under the time interval for delayed shifts is past. It DOES NOT release to cause the shift, it is either on or off. When it is on the vacuum element changes a bellcrank position giving more travel to the control pressure piston thus making the shift later. The amount rpm that the shift takes place is still dependent on throttle position just every shift is later.

The vacuum element is adjustable to make the shifts later or earlier during activation. If the system works but the shifts are still too low the adjustment is probably all that is needed.

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Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician