Hello, I’ve been through a lot because of the stupid heating blower, but found no answer. Again my problem case: Omega B CD 2.0 16V Built. 98, manual transmission, automatic air conditioning. The heating blower for the interior is ticking around. Now at the cold temperatures the heating is constantly on (usually set 22 degrees left and right, blower level set to 5 or 6, air nozzles up and down, sometimes with Eco times without). Problem: On level 1, 2, 3 ,4 and middle w The blower also runs at level 5 according to the selected stage, but the speed of the blower changes automatically. The set level 5 (or smaller) stops in the display, but the speed changes (you listen to the sound of the blower motor). As if the blower turns on and off, but without clack-crack noises as if a relay switches off and on again. The blower then becomes quiet, the air flow stops and then starts to blow again. Back and forth. Stage 6, 7, 8 or 9 of course the blower also runs, but the speed remains constant according to the selected blower stage. I have read a lot because of the pre-resistance, but then the blower only runs at full level and does not stop at all, right? My autom. climate does not indicate any error, the temperature sensor in the middle above the control buttons is obviously clean and the outside temperature is displayed correctly. What could be the error? MfG