The tranny is leaking internally. The torque converter is trying to lock up. Low pressure and or internal leaks will cause this.
Time for a rebuild.;tu
Generally delayed shifts while hot are pressure issues. Internal leaks or a tired pump.
You can have pressure test done.
With 200k it might need to be freshened up a little.
Just replacing the frictions, steels and the seals can be done at that price. No updates. No replacement of worn parts, bushings or bearings. Big chain tranny shop type rebuild.:eek:
Stancor is a great replacement part. The didn't like the cable sat on the relay. Easy fix with a couple of 3/8" spacers to give the relay a little lift..;tu