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Old 08-19-2013, 09:06 PM
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ROLLGUY ROLLGUY is offline
ROLLGUY
 
Join Date: Oct 2007
Posts: 6,853
Your hard shifting is caused by a loss of vacuum to the modulator valve. There is probably a bad rubber connector ("Y" or "X") somewhere in the system. Do yourself a favor, and get a vacuum tester (Mityvac is the popular brand) for testing vacuum systems.
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