Mainly the blend and fresh air door regulators, since when accelerating, Air stops blowing from the vents. And sometimes it takes a couple of tried to get the airflow to move from defrost to the vents. Blower motor works all speeds, I have A/c and heat.

Before I tear into this thing, I don't mind having parts on-hand I may not need, it beats multiple trips to the parts storer. If anyone has a suggested parts list, please reply with it.