PeachParts Mercedes-Benz Forum - View Single Post

HGV · #15 03-27-2002, 06:43 PM

Thanks for all the advice. Unfortunantly there is no smoking gun on this topic. Sending unit has been replace. Radiator is working well and there is no cold spots on radiator. No indication of exhaust gas in the coolant. Radiator cap has been raplace and changed with a 300sdl cap. No collapsed hoses. Water pump, fan clutch, oil thermostat and oil cooler changed. Good power. Is it possible that for what ever reason, I keep getting the wrong or a bad thrmostat? Every indication would point to the thermostat but I have changed it three times, all with Behr thrmostats with a green dot on it witch signifies turbo diesel. Maybe there is a conspiracy to trash a buntch of 603 engines. I plan on drilling a hole in the thermostat to increase flow prior to removing the thermostat all together. Any last minute suggestion? How many holes and how big? I figure to increase the CV of the thermostat by 30 to 50% if possible. A mechanic told me he did it once on a 450 to take care of a nagging overheating problem on that car. Maybe it has something to do with turbo operation or some seemingly dissassociated system. Maybe the car has an attitude problem or suffering from PMS, (Pre mortem syndrom)

Henry