Hopefully someone will this new addition to a dead thread, but I am having the exact same problem on my 90 sx. The car is trying to overheat, the ac isn't getting cold and all of that. I JUST replaced the alternator before this started happening, before I replaced that I was not having any cooling problems at all. I dis noticed when I was under the car that out of the same wire bunch that the alternator wires came from there were 2 wires that had the crimp connecters on them that were just dangling loose. I could not find where they might have been connected to so I left them loose. The guy I.got the car from did a lot of "rigging" on the car so I thought that it was probably just something he had wired in and left it alone. Where does the power supply for thr fan attach so that I have a general area to look in? The way it looks is that there probably isn't a very ling piece it was connected to so a general area would be helpful.