I just bought my '89 Isuzu Trooper (2.6L 4cyl.) as a project for and my son and I. It is now winter time and I just tried to run the heater, and no heat (air is blowing fine). We replaced the thermostat, and flushed the system, but no joy.
Not looking forward to replacing the heater core (assuming that is the right course of action) - does anyone have any suggestions?
Thanks, schmen and son