A few problems

Hello omega friends, I have a few problems with my omega (after it ran for 6 months without a problem). Problem 1: I think the good old idle problem (after 12 hours at work starts to spin at the LL first between 800 and 1800 rpm, at the traffic lights fluctuating from 400-700 rpm (where the engine does not run out). I have already looked at some posts in the forum, how do I make it, but where is the thing and how does it look?? problem 2: Every time I turn on the heating for windscreen wash nozzles, rear window and outside mirror (it’s just a button), my radio reception disappears to 0, nix nada. The problem has only been around for about 2 weeks. problem 3: When I drive the temperature I set at my automatic air conditioning system perfectly. -but as soon as I stand or lower my speed to less than 20 km/h, there is no problem. c still about 18°C cold air out of the nozzles. Problem 4: My windscreen wash nozzles do not go anymore, all sloppy are fine and pump sounds exactly as always. (The back the WiWa does not work doesn’t bother me, but the now still still in front WiWa is really a big problem. So, these are my “KLEIN” problems. Maybe we can give me some little tips. MfG greets the Buddha P.S.: I have a picture of the engine room run from another post Villeicht can describe this picture to me or make an arrow where the LLR is.