Well... finally had the cats checked and they were given a clean bill of health...
While driving the car today, the tranny came disengaged... I let off the throttle
hoping it would reengage... after a while it did and was fine the rest of the way home.
Is there a control box just for the tranny or is it in the main ECM?
Are there any external parts that may cause something like this?
The engine was replaced with a remanufactured engine and the tranny was rebuilt about
four years ago... so there's no warranty left on the engine/tranny.
Looks like it might be time to find a different car...