Might be the tourque converter solonoid... I think that's the name for it.

The thing that controls when the torque conver locks up, is malfunctioning...

If it's an around town beater, just D/C it, and remember NOT to go more then 45mph... Perfectly fine for in town, but you'll probally get a CEL.

~Nate

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95 Honda Shadow ACE 1100.
1999 Plymouth Neon Expresso. 2.4 swap, 10.5 to 1 comp, big cams. Autocross time attack vehicle!
2012 Escape, 'hunter" (5 sp 4cyl)