Question about Cars & Trucks
Just a couple of thoughts.
First I know that on some European cars when you remove and replace the radiator and or water pump the front of the car has to elevated some to "burp" the air out of the system while filling. i don't know if that would contribute to the problem but worth checking. If the level is down there may be a sensor on the radiator that is not being properly completed.
Second is or was there one or two sensors that were switched to the new radiator? Possible damage? I don't know but there are switches that operate the fans when the ac is off and when the ac is on. Could be related?
Posted on Dec 08, 2014
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Posted on Jan 02, 2017
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Jul 20, 2015 | Mercedes-Benz E-Class Cars & Trucks
Nov 03, 2011 | 1993 Mercedes-Benz Mercedes Benz 400 Class
Aug 25, 2011 | 1988 Mercedes-Benz 300
I assume you have checked the cooling system to ensure that first, that it is completely full of coolant (not just the overflow tank) with no air locks and second that there are no leaks anywhere and the radiator cap is in good condition. The heater hoses and those pesky little bypass hoses in the cooling system tend to go hard and split if they are over 10 years old, allowing coolant loss. Those spring type hose clamps tend to be less effective in clamping as the hoses become hard. Worm drive ones are the best to use. Both cooling fans operate together on most larger cars.
If there are no leaks or air locks, the over heating could also be caused by a clogged radiator (more than 15% restriction in the radiator flow capacity will cause overheating problems), a faulty water pump or a faulty thermostat.
If there are no leaks and water pump and thermostat are working correctly, but undetected loss of coolant once the engine heats up, then it could indicate a problem with the head gasket (Usually caused by allowing engine to become excessively overheated when cooling system has run dry) allowing very hot high pressure combustion gases into the engine water jacket, which super heats the coolant in the engine block, which then boils off, and is released via the cap.
If unsure take vehicle to a cooling system specialist and have them do a pressure test and more thorough diagnosis.
Sep 30, 2010 | 1992 Mercedes-Benz Mercedes Benz 300 Class
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Jun 17, 2010 | 1990 Mercedes-Benz Mercedes Benz Sl Class
Jan 13, 2010 | 1992 Mercedes-Benz Mercedes Benz 300 Class
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