No air coming out of vents, replaced squirrel cage, blower works

Check that the vacuum(?) selector switch is working. Check the hinges (really just plastic pins) on the selector door aren't broke, or that the door is actually moving.

I don't have a '93 manual, but my '96 CD says there's a vacuum control motor behind the glove box. If the '93 is similar, check that. If it's in the same location, post back, and I can check out more TS'ing tips from the CD. Maybe the 2 years are similar enough for the CD to be helpful.

is the fan sealed into pace with gaskets ?

check for leaks

bad odors