My brother dealt extensively with this, it's common on 3rd gens.  It was
something about the window rail breaking or something, and can be a little
expensive for the replacement assembly.  Something near $100/door.  It is
not a complicated installation, since he's not a mechanical type and he did
them himself.  One of them he chose not to fix, he put a fitted block of
wood in the door to prop the glass in the up position.

Search the archives at http://groups.google.com or www.maxima.org and see
about how to do it.

Dave

A classic 3rd Gen Max problem.  Sounds like you have bad Window Regulator
Units.  It's the track/guide assembly that the window rides on.  There's a
plastic pulley on it that fails, and the cable gets fouled and won't operate
the window properly.

They are easy to replace yourself.  There are several aftermarket options
available, but my suggestion is to get them from www.CourtesyParts.com .
They have a version that uses metal instead of plastic on some of the parts
that usually break.  They're about $60 a piece, but well worth it.  There
are options out there for about $35, but the quality is suspect.

Here's a site that shows you how to do the work:

http://www.geocities.com/craigbrace/

Go to the "How To" link, and select the one on Window Regulator Units.

Good luck, and let me know if you need any help.  I've done 3 of mine, and
the 4th will be fixed in the next month or so.

Bill G
'91 SE Auto
168,220 miles