My 93 with 175k just recently started to do this. As I am starting off the line, it revs up and doesn't want to engage the next gear. It will keep revving, and I have to let off the gas to get it to shift. I replaced the 1-2 accumulator last summer, along with Mercon V. I am wondering if this is possibly a problem with the 2-3 accumulator? Or torque converter wearing out (it has always had a shudder, went away for about 1000 miles after fluid replacement) It drives along in overdrive just fine once I get up to speed. Also, if I manually shift from 2-3 it is like throwing it into neutral unless I let off the gas and give it some time to shift. I am thinking I might drain and replace the fluid first, but I wanted to post and see what you guys thought, b/c it would be easier to replace the 2-3 accum. if it needs it while I am down there.