W126 blower fan, vac controlled?

[LandYaghtLover]

Fan has been working great. Then today it would not come on. Figured fuse or such, but then it popped back on and was fully controllable. After I started up the car again later, no go and been dead since.

I am asking if vacuum control has anything to do with it because I noticed my idle went way up and I could hear hissing. So when I got home I found that the rubber intake tube under the fuel dist. was collapsed and cracked bad. Its new and its URO. Figures, eh?

Both of these happened today. Related by chance? If not I need to order more than just a replacement rubber tube ASAP.