Hi everyone. I'm new to the forum (though God knows not new to the do it yourself or parts section of this site) and had a question for the experts here.

I have a 87 300D. The issue I'm having is two fold and not related (best I can guess).

Issue 1) If I leave my car outside, 70% of the time my Heater and fan will not work. If I drive on it for a 20-30 minutes, pull over turn off and restart the engine, everything works well again. If I leave the car in the garage it will work 100% of the time.

Issue 2) New issue, I tested the A/C system 1 month ago and it froze me out of the car. Today I try it on the way home and it only blew warm air. A bit of trouble shooting: If I turn the HVAC system off wait a bit and turn it back on the system blows hot air and then gradually gets cooler and cooler until warm air comes out. I verified that the Compressor is running. If this was any other car I'd assume the blend door isn't closing, but heaven forbid that the Germans leave a simple system simple. (My 240d was the best, all mechanical) Is there something I should look at that will help me. It gets about 105-110 in a few months here.

I appreciate the help......