I have to agree with most, tranny is on it's way out. Same thing happened to my Mystique. Revs high right before changing gears, O/D light flashes, tranny has no idea which way to go... start pricing used trannies.

~~~ 99 Contour SE ATX 2.0 ~~~ ~~~ 98 Mystique GS ATX 2.0 ~~~ ~~~ 94 Civic DX HB MTX 1.5 ~~~ ~~~ 91 Toyota MR2 MTX 2.2 ~~~