I still need to diagnose the cruise - been working on higher priority items so far.

No, I have not fixed the always blowing hot issue. It didn't bother me in the winter, but now that it is warming up, it is getting on my nerves. I think it just moved up the priority list! Since my last post I have: replaced the climate control selector module with a known working used unit (thing you push buttons on in the dash), tested and replaced all of the vacuum pods (confirmed operation with mityvac), replaced inoperative vacuum solenoids, and replaced the coolant valve on the firewall. My HVAC system will blow very hot when set to "red", and will be ever so slightly less hot when set to max cold (without a/c engaged). When I rotate the temp wheel I can hear clicking and vacuum sounds, and the heat will then start coming out of the center vents. When I have the fan set to auto, it will decrease fan speed as it warms up (only tried this once or twice as I get impatient waiting on it to do something). I am defiantly open to some suggestions on this as well.

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1985 300D 296,000 miles - Project "Rusty" 1/4 mile in 19.9 sec @ 71mph. It's almost rust free and water proof!

2006 Dodge/Cummins 6-Speed - 670HP 1159ft/lbs