I have a 2000 ford expedition 4r100 it will not shift into second gear going down the road this just happened out of nowhere. But u can manually put it into second while going down road? No lights on dash either. No burning smells, no leaks that can be seen, no grinding or clanking sounds are heard. Never had a shifting problem at all. Took my son to dentist had to wait out in vehicle left it running with ac on and after 30 to 45 mins he came out and he headed down the road and it wouldnt shift just high revving. It was fine going to dentist no problems. Checked the fluids it was fine, dropped the pan no metal shavings to be alarmed about, changed filter and out new fluids in as well as a new transmission control solenoid.. help what could it be
