After replacing one of the four transistors mounted inside the temp control motor unit I found that I still had an intermittent problem somewhere in the wiring. It finally turned out to be a poor connector plug to the thermistor in the nose of the left front fender. The final step to straighten the temp control circuit out was to remove the thermistor connector and solder the wires together. An ops check before reinstalling the temp control motor unit showed that the dash HVAC slider was working like a new one. I had already replaced the deteriorated alternator cooling hose with a heavy duty one I found at an RV supply outlet. I later found a similar one for about 1/3 the price in the automotive department at Walmart.
Add an insulation sleeve for the soldered connections, electrical tape, then some zip ties and reinstall the splash panel - she's buttoned up for another 100k miles..... One more project scratched off my winter "To Do List". My squealing blower motor will be next up. Yikes - a new 928 replacement part is advertised @ $600 - $700. I don't suppose anyone has found a $100 alternative like something for an old Ford truck that will fit ?
Michael
