1996 Eagle Talon

Transmission problem
1996 Eagle Talon 4 cyl Front Wheel Drive Automatic 133000 miles

I have a 96 eagle talon, automatic transmisison car. I have been having issues with the transmission. When the car gets warm, the transmission does not engage, or it struggles to engage. After I leave the car for a while it runs fine. Someone suggested that the problem could be a speed sensor, but I want to know what else it could be. If someone has had a similar type of problem I would much appreciate your input.
August 5, 2009.

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