Only way I could think of it being the tranny's fault is the torque converter clutch being locked when it is put in gear with the vehicle stopped. More than likely, though, I would think of the problem being on the engine side.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record