Fan stays on!
 

Hey everyone! I have a '91 190e 2.3. that's in pretty good shape. Recently the fan comes on as soon as I start the car and stays on. Sometimes, after driving for awhile, it may go off but for the most part it stays on. Any feedback will be greatly appriciated! Thanks!

Craig

You talking about the aux fan ???

If yes , then check this sensor with an ohm meter for open or check the plug for a bad connection.

http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&cookieid=2AO123CS42EH10NA0O&year=1991&make=MB&model=190-E-004&category=R&part=A%2FC+ACC+Temp+Sensor&appEngines=_any