Dang, they change these cars a lot. Yeah, I would think with the single 4 connector temp sensor that your fans would come on. I don't know what's going on there - don't have time to dig into the wiring diagram today.

I've never owned a 124 with ASR, so don't have much to offer there. It's difficult to imagine how ASR operation might be tied to coolant temperature - I can think of why to two would be related. Do you think it's more likely to be something like a poor or intermittent electical connection in the wiring harness? Perhaps one of the pins has partially backed out of a plug connection?

- JimY