I bought a 1984 190D with the 2.2 diesel from my grandmother last summer and, just in the last three months, the electro-mechanical fan has quit working, the heater has stuck on and the enigine diesels every time I try to shut it off. The manual shutoff works every time, but I was wondering if any of these problems are related. Regardless, it would be nice if anyone could shed some light on any one of these problems. Thanks in advance.

-Blake