Peter (psfred),

Considering his initial complaint, the car was running at 60 degrees C, it would seem the problem really is a thermostat, or a trapped air, issue. Hardly seems reasonable that after changing the thermostat the car now overheats due to either a viscous clutch issue or a crudded up radiator. If that were the case he would have had the problem before as well, or do I have this picture out of focus?

rickjordan,

A question. Does the car get to this temperature under load or while idling? Do you get any gurgling or other noises when the car is running with the heater on (listen from inside the car near the center dash vents)? How does the interior heater work? If you turn the heat all the way up does the temperature drop?

A little more information will help figure out where the problem is. Good luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)