JohannesRacer
Problems with the air conditioning and overheating in the Opel Signum from 2003: Search for solutions and experiences
Air conditioning blows warm air
Overheating
(Translated from German)
4 comment(s)
Hey, I'm here again! Your description actually looks like a very similar problem to the one I had with my Vectra. So yes, it could very well be that the control unit/resistor of the electric fan is the culprit in your Signum too. Of course, the mileage of your car is already quite high, so some parts could be starting to wear out, and the control unit could be one of them. But I would still recommend that you first check that all the fuses are OK and that the fan itself is working properly. If everything is OK, then I would consider the control unit/resistor as a possible cause, as I mentioned before. Just my guess, but that could solve the problem. Like me, you could be enjoying cool air again soon! Stay tuned and let us know how it goes. Good luck with it!
(Translated from German)
Hey, that's really helpful information, thank you very much! I'll have a look at it and check the fuses and whether the fan is working properly first. Your assumption about the control unit/resistor sounds really plausible and I think I'll take a closer look at it afterwards (if necessary). In any case, I'm motivated to get my favorite piece up and running again. Wish me luck, I'll keep you up to date!
(Translated from German)
Hi, I had the same experience with my 2005 Opel Vectra. I would describe myself as a car enthusiast with a little experience rather than a trained mechanic. In my garage we found out that the "control unit/resistor" of the electric fan was defective. The repair cost me 480.0 euros. It was worth it, because the problem with the air conditioning and overheating was solved afterwards. Can you provide more information about your car? Then I might be able to help in more detail.
(Translated from German)