Slipping and Overdrive
converter clutch slipping) it will then refuse to lock up
anymore for the duration of the trip. You can go on like
this without setting the light, because the code will
un-set on its own once slip RPM comes back into range.
Or you may see the light if you are on it enough. I've had
it both ways. Only thing to do is set the slip-fault RPM
limits higher (tolerating the converter's nature) and/or
bump the line pressure up at lower loads. But a proper
converter clutch would be better than all that.
Some time with a scanner would let you see where the
slip lies, you should try and get the data before buying
any parts (good converter + shot trans = still suck).

