Originally Posted by zafarhayatkhan

Did they intall a new thermostat?

The high speed fans come on at 105-107 F. The thermostat start opening around 87-90 F. The new thermostat maybe opening a little bit later than the previous one.

The temperature in my 94 E320 started to stay a little below 80 F on cold mornings, replaced the thermostat and now it is always above 80 F and gets close to 100 F in city traffic.