I know there has been a lot of discussion about how to fix the climate control already but I have a few questions. I replaced the brushed on the motor hoping to get the blower working only to discover that the wire that connects to it has no voltage or very low voltage ( ~.02- ~.5v). After reading some of the posts here I found out about the temperature controller. The symptom I have now is that the blower will work intermittently and the air is sometimes warm and sometimes cold no matter how I adjust the temperature wheel. From this I conclude the following:
1. the motor is repaired (I tested it after I put in the new brushes)
1. the fan switch is good because the blower works sometimes.
2. the vacuum buttons work since I can see the actuators move and hear them when I press the buttons.
3. the heater core must OK since warm air comes out sometimes.

My question is what about the temp. controller box? Are the symptoms I have described characteristic of a dying temp. control unit (bosch 1 147 328 029)? I pulled off the cover and it has a few ICs and tranisters that could have blown from the blower motor being stuck when the brushes wore out.

Also the AC compressor is missing and the #8 fuse will blow when I turn on the ignition. These I would assume are not related to the problem I have with the blower motor working intermittently and intermittent hot air.

What should I try next to pinpoint the problem(s). Should I shell out the $80.00 to buy a new temp. controller?