howard281983
New Member
Hi
I have a 2014 C220 CDI. The temp normally stays the 90C mark.
However recently its been getting to that mark, and after about 40 minutes of driving it'll slowly drop to 80-85c mark, then slowly raise back to where it was. This happens on almost every journey now, sometimes multiple times depending how long the journey is. It can be at high speed or low speed, so its not dependant on engine load. No difference with ac/heater on/off. New merc thermostat installed and still the same. No leaks, proper coolant 325.00, 50/50. However, when it happened last time, I noticed that the fun was running with 10c air temp and coolant under 90c? Can someone tell me which sensor is responsible for turning on/off the cooling fan please? Is it one of those on the thermostat? cheers
I have a 2014 C220 CDI. The temp normally stays the 90C mark.
However recently its been getting to that mark, and after about 40 minutes of driving it'll slowly drop to 80-85c mark, then slowly raise back to where it was. This happens on almost every journey now, sometimes multiple times depending how long the journey is. It can be at high speed or low speed, so its not dependant on engine load. No difference with ac/heater on/off. New merc thermostat installed and still the same. No leaks, proper coolant 325.00, 50/50. However, when it happened last time, I noticed that the fun was running with 10c air temp and coolant under 90c? Can someone tell me which sensor is responsible for turning on/off the cooling fan please? Is it one of those on the thermostat? cheers