BoostedSwede

Once again, on my sister's 1997 850 N/A, manual climate control. Just replaced the heater core on it, and it's all fine (no leaks, no nothing). The issue is that no matter where I turn the temperature selector knobs, it only ever blows luke-warm air. Furthermore, the position selector knob seems to do nothing. When you turn it, it only blows on the face vents, no matter what setting you have it on.

I replaced the manual climate control unit this past summer with a known good one, as her original knobs all seized up. Any ideas on what could be going wrong here? The only thing I can think of is that somehow the cables aren't attached right or something...

This is on my sister's 1997 850 NA. About 200k miles on it. The car keeps losing power to the point that she can't maintain speed, then all of a sudden it gains it back. It also won't rev out to redline in park...holds at about 5,300rpm. The car also feels like it's lacking power, even when it seems to be acting normally. Here's the kicker: no CEL is on.

The car seems to be in a good state of tune...all recent tune-up work done by me. I can't figure out for the life of me what it is. The one thing that I'm thinking is that it might be a clogged cat...it does rattle a bit, but I'd think that would throw a CEL, would it not? Thanks for any help!