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Old 09-20-2002, 05:44 PM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
You are in the right area!
Vacuum to the modulator controls both how hard & WHEN this trans shifts.
"T" a vacuum guage into the vacuum line that goes to the modulator & drive the car(watch the gauge inside of the car). Vacuum should be high at idle & with foot off of the fuel pedal. At full throttle there shouldn't be any vacuum. In-between the vacuum should go up OR down depending on pedal position.
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