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vac lines help
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06-06-2016, 08:51 AM
tyl604
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Join Date: Feb 2008
Location: Atlanta, GA
Posts: 3,641
The tranny does not use vacuum for upshifts; it should upshift smoothly even if the plastic line from the VAV is not attached to the vac modulator in the tranny. You need vac for downshifts only; without vac it will downshift but with a clunk.
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