can someone please help. i have changed all sorts of parts and nothing seems to fix this problem. Changed the tcm, speed senor, and few other thing. Its a tiptronic automatic (97 prelude) and the d4 light blinks and i dont believe its changing gear correcly. If know what would fix this plese help

 

check tranny fluid ? has it been flushed recently ? and sensors you can see broken ? or un hooked ?