Originally posted by haasman
The 190e has the same ticking .... I am glad you posted this. I am curious as well as to why and where it is coming from.
Anybody encounter this before?
I've encountered this phenomenon a few times in my 190E, too, but I haven't a clue what it is. The ticking interval is about one to two seconds and it sounds like it's coming from behind the RH dash or maybe the RH kick panel.
I'm also not sure what the "monovalve" is. I am familiar with the vacuum operated heater flow control valve and the AC expansion valve, but not the "monovalve". What is it?
The ticking sounds like it could be some kind of mechanical relay.