My '89 190E 2.6L has a weird pattern of aux fans behavior.
1. They come on within 10 seconds of a cold start, sometimes immediately.
2. They do turn off after a good amount of driving.
3. They seem to be on when the a/c is on.
The a/c drier switch is not connected to anything. P.O. must have disabled it. I think the only switch left to check is the 100C switch. Am I correct?
The fuse looks okay...the hi-speed relay was replaced 3 months ago.
Please advise if I can check anything else.