Welcome to RennTech.org Community, Guest
By Rod Croskery
Two of the actuators were making noise unless the system was set to LOW. In Eastern Ontario we will soon need heat, so it was time to set things right.
The one I found behind the glove box pushed a white plastic rod to what I suspected was the fresh air baffle. It was jammed, but after some time on the bench and a little grease, I put it back to work opening the fresh air flow. Delicate touches from 12V, alternately reversing the polarity, soon loosened the device to where it would reliably cycle, so I snapped its little ball joint into the cup of the plastic rod, and it worked when I switched on the fresh air.
The other actuator I found with the shop "laproscope," reattached a floppy spring with a forked twig, and nudged it with the scope lens until it started making full orbits. Don't know what it does, but I suspect it mixes air.
Still have to test drive and put the glovebox back in, but I called it a win for the day.