It may well be an engine problem rather than trans.
A car sitting for a year will have problems with fuel deteriotation, without adding a fuel stabilizer before storage.
The gasoline will form gum and varnish deposits within a month or two.
I would drain and clean fuel tank and add fresh fuel and a cleaner like Seafoam to start with, also replace fuel filter, plugs.
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Sunday, August 8th, 2010 AT 8:24 AM