First of all, hello to everyone here in the forum, am new here and have the first question right away. So the car: Opel Omega B MV6 BJ 1998 km 185000 automatic So now to the problems: So I had various things done at about 165000km like ZKD, valve shaft seals, tooth and rib belts, WAPU and a few small things. So far it was running top, but the problems start again. When it is cold and is started there is a strange loud whistle in the engine compartment, this is nac h about 1-2min away. The speed also plays a bit crazy. Sometimes with a little over 1000 then it goes short to 500 and then again 1000. this plays 3-4 times. The bigger problem however is that it gets warm very quickly. in cold weather so at 93° in warm weather and during long rides also in cold around 95° or a little higher. however, if I then park the car, especially after longer distances, the fan runs only shortly after about 10 sec. I then want the car 5 min later sta rten is the temp at about 97° or higher and it does not start. Must then wait half an hour or so. If I drive longer distances and it is at 95°, other things also occur like e.g. the servo becomes weaker, steering wheel is difficult to rotate or the automatic switches very jerky. hope I could explain it halfway. would be happy if you can help me. I know that a remote diagnosis is difficult;-). many thanks in advance MFG