So I have an 02 max with 70 k or so on it. Trans has been eacting up with 2nd to third gear shift. Just a little sloppy of a shift I wouldnt say it slips but the car tachs up on the shift and u hear the engine rev about 750 rpms or more . Problem is only when its cold, I just had the trans fluid replaced and problem is still there. My mechanic says that its a sensor issue but not sure what because its not puttin out any codes. Trans is still solid i think. Any ideas?