Hi everyone,

I found this old post. I'm having the same problem with me 1995 e320. Recently, I noticed that when I come off the highway into stop and go / residential driving, the temperature will shoot up to 100 plus. I can hear the fan motor come on and if I blast the heat the temp will come down to normal operating temp only when heat is running. When I go back up on the highway it drops to the normal range.

The head gasket was replaced a couple of years back as was the water pump. I haven't had any over heating issues until recently (past 2 weeks this problem first came up).

Thanks,
Michael