Funny, my '91 Integra AC just died as well. I assumed it was out of
coolant. I fear if I fill it up (if they still allow that refrigerant
and it's not illegal &/or exorbitant) it won't last. Happened on my
'83 Accord as well after about the same amount of time. Let us know
what you find out and if you solve the problem. You are riding shotgun
for me....Cheers