Transmission sealant seemed to fix it, then started throwing the blinking O/D light again. i'll drive it until it gives out then swap in a new transmission. it shifts fine and no issues. wonder if they additional power is to blame.Check tcc solenoid, valve chest, and clutch itself.
that code pops up when the tcm activates the solenoid, sees current but still detects slip in the converter (engine revs vs input revs at transmission)
Give it a slug of AT-205 and see if that helps, could be a bit if grunge in the solenoid passages or a leaking tcc o ring on the input shaft
2 fluid changes already 1 fluid change after only about 15 miles hoping to fix it. the the transmission additive with the current fluid. the one i took out was actually a bit dirty which surprised me since was only about 15 miles.Change oil first, or drain it and see what its like, could just need a freshen with fluid to get past inspection
You should be able to keep the underdrive main pully by switching to a smaller pully on the altenatorGoing to try swapping back the OEM crank pulley. I have a suspicion that my code related to the transmission may be because of a voltage issue with the under drive pulley not letting the alternator provide the correct level. I replaced the alternator with a new one and saw that the blinking overdrive light has gone away more consistently after driving at highways speeds, but comes back on after slowing down. If thats the issue, I'll put it on just to pass my inspection and put it back on right after.