I just spent a bundle to replace the heater core and the AC condensor in my 93 945 T. And this week, the beast had the nerve to thumb her nose at me by refusing to blow any cold air into the passenger compartment. The AC compressor is working fine. However, the blower motor or the switch operating the motor is on the fritz. In the days preceding this incident, everything was fine. The motor was not noisy, so I do not suspect that the blower motor is dead. I suspect a switch or a relay in the blower motor circuit instead.

Any thoughts out there about diagnosing and fixing this one.

Still love my 940T with 200K on the clock.