Here potna go to this board and sign up as a member and post your question:
http://forums.maxima.org/showthread.php?t=126113
They can help, they have many experts there and someone has had or knows someone with your problem, what to do and how to fix it.
I hope this helps but it's just as mentioned before, hardly anyone here owns an early 90's Maxima, most of us here are a few 3rd gens, 4th gens, 5th gens and 5.5 gens.
Good luck though.