ANOTHER bad Heater!!

[olsaltybastard]

I have had time to cool off, so now I will write with 1,000% less profanity. My heater decides to work when it wants to, but never on a 1.5 hour road trip. I tried every configuration of the buttons and temp control, but no heat. The blower works, but blows cold air. Exactly 1 block from my house, I decide to turn the heater on (for the 100th time) and it decides to blow HOT. If I leave all of the switches alone and drive to work tomorrow, it will be cold again. Most likely, it is not the CCU or the silver temp control box behind the glove box (I changed it a few days ago.)

I know I can disconnect the wires to the monovalve, so I will try this next. If you have any more insight as to what it may be, I may not crash my car into a wall!!

Recap: Sometimes I get heat and most of the time I do not. When it's hot, it's HOT.

'83 300D

Thanks!!