The engine is not supposed to maintain a constant temp regardless of conditions. Everything is functioning as it should when the car warms up at a stop in a mechanical cooling system.

If you think differently, you may want to call up the engineers in Germany and explain to them why they are wrong and have they have made a mistake in building cars for the last 50 years.

__________________
Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record