Hey guys. My '80 240D runs COLD! I can pretty much assume my thermostat is stuck wide open. I drove for 2 hours tonight and the temperature gauge didn't move at all. I had some heat, but the engine stayed cold. My temp gauge does in fact work, but driving at night when it is as cold as it was tonight she just will not warm up.
So, new thermostat should clear that one up? I've never done this anyone got some neat tips and tricks?
Another thing.. The radiator fan is always engaged, so this could be the problem IF the thing is supposed to shut off until the engine is warm enough. If it is temperature controlled what should I do to get it back into spec?
So what do you think, fan clutch or thermostat.. or any combination. I would like to get my fuel economy back I've heard cold diesels don't quite "sip". I miss that almost instant hair drier like heat at night too.