Quote:
Originally Posted by airfoill
I've read somewhere that the vacuum control valve at the injection pump controls the timing of the shift and the modulator controls the quality of the shift. Does this sound correct?
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Not quite. The VCV and modulator are components of the same system. The VCV simulates gasser manifold vacuum signal based on throttle position. The modulator converts the vacuum signal to transmission pressure signal.
Sixto
87 300D