It seems the wires to the blower motor on 1st gen troopers
get pretty hot and cause the fan to cut out occasionally.
I had this problem this summer, but it seems to have gone away for the time being. Some one had posted that they had rewired the blower motor with larger gauge wires with success.

Blower Problems


If mine start acting up again I have a spare blower motor that I will install with new wires.


1990 Isuzu Trooper 2.8L V6