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Old 03-07-2002, 10:50 AM
Larry Parise
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I dont know if this is the same but my 78 sl started to do down shift and then upshift in conditions I thought unusual. After about 2weeks it started slipping between 2nad and 3rd. I replaced the tranmission because of the clutches wearing. I would suggest looking into a vacuum leak also. Only a guess. Larry
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