1992 Dodge Dynasty

Transmission problem
1992 Dodge Dynasty 6 cyl Front Wheel Drive Automatic

2 yrs. Ago my father pulled in to a juck yard, told the guy his trans. Was slipping and shifting hard.
man says: yeah I know what that is, his removed a part from a junk vehicle and istalled it on the left side of the engine block or the side wall (not sure which) and charged him $50.00.
Well, now it's slipping again can you tell me what the part is called and where to get one?
Sean Ellwood
September 3, 2008.

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